Medical protective mask SEQUOIA / 1 pc
Medical protective mask SEQUOIA VIRALSHELD COVID-19:
Professional medical masks designed specifically to protect against COVID-19, confirmed by appropriate approvals.
Advanced technological POLISH PRODUCT!
The unique technology of NanoPro nanofibers guarantees the highest level of protection while maintaining ease of breathing.
Innovative, ultra-light filtration nanomembranes have been used, making the mask extremely light and thin.
The product is registered as a medical device in accordance with the EN 14683: 2019 + AC: 2019 standard - medical masks
Advantages:
respiratory protection at the level of FFP2 (as defined in EN 149: 2001 + A1: 2009).
the notifying entity in the EU - NB 0200
type IIR
filtration efficiency - area 98%
gray mask color - confirming the use of nanofibers.
use time - up to 8 hours
protection against COVID-19 in accordance with the European regulation RFU 02.075 version 2
protection against pathogens, including bacteria, viruses and fungi.
Package:
- 1 piece
Hand preparation AHD 1000 spray 250 ml
AHD 1000 alcohol preparation for hygienic and surgical disinfection of hands and skin. It shows immediate and prolonged action.
Characteristics:
- It shows a full spectrum of biocides, bacteria, tuberculosis, fungi and viruses (HIV and HBV).
- Demonstrates immediate and prolonged action according to pr EN 12791.
- Maintains biocidal effectiveness in the presence of organic tissue burden.
- Very well tolerated by people with sensitive skin prone to allergies.
- Contains the addition of nourishing and protective substances, prevents the skin from drying out.
- It has a pleasant and delicate fragrance.
- Makes it easier to put on latex gloves.
- Has a Registration Certificate of the Ministry of Health and Social Sciences.
Package:
- 250ml spray bottle.
Aerodesin 2000 1l spray
Aerodesin 2000 - ready-to-use, alcoholic preparation for quick disinfection of small, organically unpolluted surfaces and objects, hard-to-reach places and crevices.
Characteristics:
- Full biocidal spectrum, fights bacteria, mycobacteria, fungi and viruses.
- Saves time - works very quickly, dries quickly.
- Accurate - reaches hard-to-reach places and crevices.
- Convenient to use - the preparation is ready to use, does not require dilution.
- Each 1 liter bottle is equipped with a sprayer.
- It has a pleasant smell, leaves no stains or residue.
- Ready to use preparation - it must not be diluted.
- High efficiency - with 1 liter of the preparation, 20 - 30 m2 of surface can be disinfected.
Remarks:
- Evenly cover the surfaces to be disinfected with the preparation (max. 50 ml / m2) by spraying or using a damp cloth. Do not use on surfaces sensitive to alcohol (e.g. plexiglass, some plastics, paint coatings, varnishes). If in doubt, test the effect of the preparation on a given surface. Use protective gloves while working with the preparation.
Composition in 100 g of the preparation:
- 1-propanol - 32.5 g.
- Ethanol - 18g.
- Glutaraldehyde - 0.1 g.
Biocidal spectrum:
- Bacteria, fungi - 1 minute.
- Mycobacteria tuberculosis - 5 minutes.
- Viruses: BVDV (HCV), Vaccinavirus - 30 seconds.
- HIV, HBV - 1 minute.
- Adenovirus - 5 minutes.
- Papovavirus - 15 minutes.
- Poliovirus - 30 minutes.
Package:
- 1l spray bottle.
Lysoformina 3000 (Lysoformin) 1l.
Lysoformin 3000 - an aldehyde concentrate for disinfecting and cleaning tools, medical equipment and utensils, and surfaces.
Features:
- Universal preparation for simultaneous cleaning and disinfection of all types of endoscope instruments and surfaces.
- Effective - has a wide spectrum of activity, bactericidal (including TbC), fungicidal and virucidal.
- Pleasant to use - does not leave stains and residue on disinfected surfaces and objects.
- It has good washing properties even in the presence of organic impurities (blood, albumin, etc.), has a pleasant smell and is easy to prepare.
- Mild - it does not damage disinfected tools and surfaces, contains anti-corrosive substances.
- Efficient concentrate - economical to use.
- Liquid concentrate - easy preparation of working solutions, for the preparation of which you can use tap water.
- It has PZH approval and CE certificate.
Package:
1 liter bottle of concentrate.
Protective mask with interchangeable foils
Protective mask
Features:
- Provides hygienic and comfortable work.
- Indispensable in every dentist's office.
- High-class material. Holder
- Ergonomic.
- Light.
- Provides a wide field of view. Foils
- Antistatic.
- Very good transparency.
Package:
- 1 piece. holder.
- 4 pcs of replaceable foils.
Removable foils for the protective mask 4 pcs
Additional replacement foils for the dental cover.
Features:
- Antistatic.
- Very good transparency.
- Optimal size to protect the face.
Package:
4 pcs
Basket for ultrasonic cleaner Sonic-3 and 3S
Basket for ultrasonic cleaner Sonic-3 and 3S.
Package:
- 1 piece.
Basket for ultrasonic cleaner Sonic-6 and 6D
Basket for ultrasonic cleaner Sonic-6 and 6D.
Package:
- 1 piece.
PROTECTIVE MASK (HALF MASK) TYPE FFP2 KN95 with valve / 2 pcs
Advantages:
FFP2 KN95 mask with valve provides a high level of protection.
It is made of high-quality materials that filter out at least 95% of airborne particles.
The mask meets the European standards EN 149. KN95
It reduces the risk of contracting the virus.
White color.
Package:
- 2 pcs
Hand cream Silonda 500ml
Silonda care emulsion for hands and body with beeswax. Silonda maintains and regulates the level of skin moisture, especially in the case of frequent washing and disinfecting. Quick-acting moisture regulators protect the skin from irritation.
Features:
- A feeling of pleasant coolness, freshness, e.g. after heat treatment, infrared or ultraviolet radiation therapy or radiotherapy.
- Easily removable from underwear in the washing process.
- For sensitive and prone to damage skin.
- Perfect absorption.
- The rich composition of caring oils regulates the skin's moisture and improves its elasticity.
- It protects and smoothes the skin.
- It has a pleasant and delicate fragrance.
- Dermatologically tested.
- High performance.
- Oil-in-water emulsion.
- Submitted to the National Cosmetics Information System, no. In the register RK / 36674/2002.
Package:
500ml bottle.
Dental cover
Anti-spatter face shield, type OL-75 / S. It is designed to protect the face against splashes of solids and splashes of liquids
Package:
1 piece.
Hand cream Silonda Care 500 ml
Silonda Lipid Care - regenerating emulsion for hands and body. Its task is to compensate for the loss of moisture and the degree of lubrication of the skin, as well as regenerative in the case of already damaged skin. Silonda lipid simultaneously regenerates and nourishes the skin, which requires special protection in unfavorable conditions (e.g. frequent washing).
Characteristics:
- For sensitive and prone to damage skin.
- It regenerates damaged skin.
- Perfect absorption, easy to spread, quickly penetrates the skin.
- The rich composition of conditioning oils regulates the skin's moisture and improves its elasticity.
- It protects and smoothes the skin.
- It has a pleasant and delicate fragrance.
- Dermatologically tested.
- Water-in-oil emulsion.
- Submitted to the National Cosmetics Information System, no. In the register RK / 36767/2002.
- High performance.
Package:
- 500ml bottle.
Maseczka KN95 z filtrem FFP2 1 szt
MASECZKA OCHRONNA typ KN95 FFP2 Skuteczność filtracji to 95%. [BFE > 95%] Maska spełniająca normę EN149:2001+A1:2009
Maska idealnie dopasowuje się do twarzy i jest bardzo wygodna codziennym użytkowaniu.
WŁAŚCIWOŚCI:
- Pełna ochrona dróg oddechowych
- Wygodna w noszeniu
- Hypoalergiczna
- Możliwość wielokrotnego użytku
- Wszyta blaszka usztywniająca nosek
- Kolor: biały
- Rozmiar: uniwersalny
Sposób dezynfekcji maseczki:
- Przed ponownym użyciem maskę możemy podgrzać w piekarniku. Należy go ustawić na temperaturę 70 st. C i zostawić w nim maseczkę na 30 minut.( najlepiej w naczyniu żaroodpornym)
Ważne. Maseczki są towarami higienicznymi, które zgodnie z art. 38 pkt. 5 ustawy o prawach konsumenckich nie podlegają zwrotowi.
Opakowanie :
- 1 szt
Non-woven protective suit f.60 g/m2
Non-woven protective coverall with hood and zipper.
- White color.
- In the sleeves, hood and waist, the suit has sewn elastic bands, thanks to which it fits perfectly to the body.
- Non-woven fabric 60 g/m2.
Packaging:
- 1 piece.
Desytol 1 liter, refill
NDO Desytol is a ready-to-use disinfectant based on a mixture of alcohols. NDO Desytol is used to disinfect small surfaces of countertops, tables, handrails, as well as materials and objects used in prosthetics.
Characteristics:
- Bactericidal, including tuberculosis mycobacteria (TBC).
- Fungicidal.
- Virucidal.
Application - Disinfection of small surfaces. - Silicone, plaster and stense impressions.
Package:
- 1l without sprayer.
NDO Desytol impressions disinfection 1l
NDO Desytol is a ready-to-use disinfectant based on a mixture of alcohols. NDO Desytol is used to disinfect small surfaces of countertops, tables, handrails, as well as materials and objects used in prosthetics.
Characteristics:
- Bactericidal, including tuberculosis mycobacteria (TBC).
- Fungicidal.
- Virucidal.
Application - Disinfection of small surfaces. - Silicone, plaster and stense impressions.
Package:
- 1l with sprayer.
Hand preparation AHD 1000 1000 ml
AHD 1000 is an alcoholic preparation for hygienic and surgical disinfection of hands and skin. It shows immediate and prolonged action.
Characteristics:
- It has a full biocidal spectrum: bacteria, tuberculosis, fungi and viruses (HIV and HBV).
- Demonstrates immediate and prolonged action according to pr EN 12791.
- Maintains biobacterial effectiveness in the presence of organic tissue burden.
- Very well tolerated by people with sensitive skin prone to allergies.
- It contains the addition of caring and protective substances, which prevents the skin from drying out excessively.
- It has a delicate and fleeting scent.
- Makes it easier to put on latex gloves.
- Has a Registration Certificate of the Ministry of Health and Social Sciences.
Package:
- 1l bottle
Hand cream Silonda Care 100ml
Silonda Lipid Care- regenerating emulsion for hands and body. Its task is to compensate for the loss of moisture and the degree of lubrication of the skin, as well as regenerative in the case of already damaged skin. Silonda lipid simultaneously regenerates and nourishes the skin, which requires special protection in unfavorable conditions (e.g. frequent washing).
Characteristics:
- For sensitive and prone to damage skin.
- It regenerates damaged skin.
- Perfect absorption, easy to spread, quickly penetrates the skin.
- The rich composition of conditioning oils regulates the skin's moisture and improves its elasticity.
- It protects and smoothes the skin.
- It has a pleasant and delicate fragrance.
- Dermatologically tested.
- Water-in-oil emulsion.
- Submitted to the National Cosmetics Information System, no. In the register RK / 36767/2002.
- High performance.
Package:
- 100 ml tube.
Ultrasonic cleaner CD-4820
Ultrasonic cleaner CD-4820. Thanks to its high power, up to 170Wat, it allows very good cleaning of very dirty objects, even mechanical ones. Perfect for cleaning stainless steel, dental (medical) tools, glasses, jewelry, cleaning stamps, electronics (including plates) and even dentures. This washer is readily used by dentists, jewelers, opticians, hairdressers, beauty salons and workshops. It cleans very thoroughly and removes all dirt.
Features:
- A rectangular, capacious tank made of stainless steel.
- 5-cycle digital display.
- Strong plastic waterproof housing.
- Capacity 2500 ml.
- 5 cycles of 90/180/280/380/480 seconds.
- Tank dimensions: 250x150x80mm (L x W x H).
- Washer dimensions: 290 x 230 x 180mm (L x W x H).
- Weight: 2.5 kg.
- 1 year warranty.
Package:
1 piece.
Powdered latex gloves.
Santex powdered latex gloves by Mercator Medical.
The gloves are made of natural rubber. The inside of the gloves is coated with a layer of cornstarch.
Packaging: -100 pcs
Ultrasonic cleaner Sonic-3 S equipped with a drain valve.
The high-power ultrasonic cleaner Sonic 3 is widely used in dental offices, for cleaning and disinfecting medical tools, prosthetic and jewelery laboratories, and in service of fuel equipment, saws and printers.
Additional options:
- The washer basket can be ordered under product number 1314
Technical data:
Internal dimensions bathtubs (L x W x D) 240 x 135 x 100 mm
Capacity 2.8 l
Ultrasonic power (max / period) 2 x 160 W
The frequency of 40 kHz
Heating system power 150 W
Temperature regulator 30-80 ° C
Timer 0-30 min
External dimensions (L x W x H) 265 x 165 x 230 mm
Weight 3.7 kg
Package:
- 1 piece with lid, without basket.
Non-woven protective masks with an elastic band (50 pcs) - PROMOTION
Disposable three-layer protective masks with an elastic band.
Three-layer full barrier. Fastened on the ears with rubber bands. Made of high-quality non-woven fabrics that do not cause skin irritation. Good air permeability. Does not cause allergies. Does not contain fiberglass.
Characteristic:
made of non-woven fabric with a bactericidal insert, type II
in accordance with the EN 14683 standard
does not contain latex
it has a stiffener that allows it to adjust to the shape of the face
blue, yellow, lime.
Medical component
EN 14683-2019 CERTIFICATE
Packaging:
- 50 pcs.
Ultrasonic cleaner EasyClean
Ultrasonic cleaner EasyClean. A particularly compact and powerful device, it is suitable for cleaning all items in the laboratory. The cleaning time can be set between 90 and 480 seconds. The device works very effectively with a cleaning frequency of 42 kHZ.
Advantages:
- Sweep function: excellent cleaning power through the distribution of the sound field.
- Deagas function: quick degassing of the washing liquid.
- Safe dry heating adjustable in the range of 30-80 ° C.
- Automatic mixing function for rapid heating.
- Time-controlled, device switch-off after 12 hours
- Digital display of temperatures and cleaning time.
Technical data:
- Dimensions - 30.0 x 17.9 x 21.4 cm.
- Bathtub 24.0 x 13.7 x 10.0 cm.
- Tub working capacity 1.9 l.
- Tub capacity 2.75 l; 230 V.
- Ultrasonic frequency 37 kHz.
- Effective ultrasound power 80 W.
- Peak ultrasound power max. 320 W.
- Heating power 200 W.
- Weight - 3.3 kg.
Package:
1 piece.
Ultrasonic cleaner Sonic-2
The Sonic 2 ultrasonic cleaner is used in jewelery and prosthetic workshops as well as in laboratories for cleaning and degassing.
Additional options:
- The washer basket can be ordered under product number 2257
Technical data:
Internal dimensions bathtubs (L x W x D) 150 x 135 x 100 mm
1.6 liter capacity
Ultrasonic power (max / period) 2 x 100 W
The frequency of 40 kHz
Heating system power 150 W
Temperature regulator 30-80 ° C
Timer 0-30 min
External dimensions (L x W x H) 175 x 165 x 220 mm
Weight 2.8 kg
Package:
- 1 piece without basket
Aerodesin 2000 5l
Aerodesin 2000 - ready-to-use, alcoholic preparation for quick disinfection of small, organically unpolluted surfaces and objects, hard-to-reach places and crevices.
Characteristics:
- Full biocidal spectrum, fights bacteria, mycobacteria, fungi and viruses.
- Saves time - works very quickly, dries quickly.
- Accurate - reaches hard-to-reach places and crevices.
- Convenient to use - the preparation is ready to use, does not require dilution.
- It has a pleasant smell, leaves no stains or residue.
- Ready to use preparation - it must not be diluted.
- High efficiency - with 1 liter of the preparation, 20 - 30 m2 of surface can be disinfected.
- It has PZH approval and CE certificate.
Remarks:
- Evenly cover the surfaces to be disinfected with the preparation (max. 50 ml / m2) by spraying or with a soaked cloth. Do not use on alcohol-sensitive surfaces (e.g. plexiglass, some plastics, paints, varnishes). If in doubt, test the effect of the preparation on a given surface. Use protective gloves while working with the preparation.
Composition in 100 g of the preparation:
- 1-propanol - 32.5 g.
- Ethanol - 18g.
- Glutaraldehyde - 0.1 g.
Biocidal spectrum:
- Bacteria, fungi - 1 minute.
- Mycobacteria tuberculosis - 5 minutes.
- Viruses: BVDV (HCV), Vaccinavirus - 30 seconds.
- HIV, HBV - 1 minute.
- Adenovirus - 5 minutes.
- Papovavirus - 15 minutes.
- Poliovirus - 30 minutes.
Package:
- 5 l canister
Nitrile gloves 100 pcs
Nitrile gloves without powder. Blue, purple or black color. Due to difficulties in the availability of gloves caused by Covid19, we will ship the currently available color.
Characteristics:
- Thin and strong.
- Very flexible.
- The matt outer structure ensures a firm grip.
- The slippery internal structure makes it easy to put on.
- For people allergic to latex.
Package:
100 pcs
Ultrasonic cleaner Sonic-6D
The ultrasonic cleaner Sonic 6D is used in treatment and dental offices, endoscopic laboratories (cleaning of biopsies), prosthetic laboratories and various services.
Additional options:
- The washer basket can be ordered under product number 1315
Technical data:
Internal dimensions bathtubs (L x W x D) 295 x 235 x 100 mm
Capacity 6.5 l
Ultrasonic power (max / period) 2 x 320 W
The frequency of 40 kHz
Heating system power 300 W
Temperature regulator 30-80 ° C
Timer 0-30 min
3/8 inch drain valve
External dimensions (L x W x H) 325 x 265 x 225 mm
Weight 5.9 kg
Package:
- 1 piece with lid without basket
Dermagel latex gloves powder-free
Powder-free latex gloves with a latex-free inner layer.
Package:
- 100 pcs
Mediwax - hand lotion 75 ml tube
Emulsion based on beeswax for the care of sensitive, dry and prone to irritation skin of the hands and body.
Advantages:
- recommended for everyday skin care, especially sensitive, dry and damaged skin
- recommended for people who frequently wash and disinfect their hands or have frequent contact with cleaning agents
- protects, nourishes and regenerates the skin
- rich in natural nutrients, moisturizing, moisturizing and smoothing the skin
- contains beeswax, hyaluronic acid, collagen, elastin, vitamin complex and oils of coconut, apricot kernel and lemon
- It spreads easily on the skin and is perfectly absorbed without leaving an oily layer
- has a pleasant, delicate fragrance
- it is very efficient
Package:
- 75 ml
Zeta 3 Soft 750ml surface disinfection
Ready-to-use disinfectant, intended for quick and very effective disinfection and cleaning of medical equipment surfaces after patients (handles, shelves, armchairs, contra-angles, dental instrument trays, film stands, lamp holders, dental unit spittoons, etc.). The preparation is specially prepared for the disinfection of sensitive surfaces and for people sensitive to the smell of alcohol.
Advantages:
- broad biocidal activity
- does not contain aldehydes
- compliant with European standards
- ready to use
- not very aggressive to the respiratory system
- does not make you drowsy
- lemon scent.
Spectrum of action:
- bactericidal: EN 13727, EN 14561 (S. aureus, P. aeruginosa, E. hirae)
- fungicidal: EN 13624, EN 14562 (C. albicans, A. niger)
- mycobactericidal, tuberculocidal: EN 14348, EN 14563 (M. Terre)
- virucidal, also HIV, HBV, HCV: EN 14476 (Poliovirus, Adenovirus, Parvovirus)
- 100g of the preparation contains: # 34.4 g of ethanol, # 14 g of isopropanol.
Package:
- 750 ml
Zeta 4 Wash surface disinfection 3L
Characteristics:
A wide spectrum of activity in accordance with the latest European standards in the field of disinfection
They do not contain aldehyde and phenol
Compatibility tested on surfaces, including the most delicate
Advantages:
Efficiency: high protection for professionals and patients
Safety: agent free of aldehydes and phenols
Speed and convenience: disinfection and cleaning in one step
Package:
- 3l canister.
Zeta 7 Solution 1l impression disinfection
A concentrated disinfectant specially designed for quick and very effective disinfection of silicone, alginate, polyether and polysulfide impressions.
Advantages:
- wide spectrum of action
- does not change the shape and dimensions of the impressions
- compliant with European standards
- does not disturb the gypsum bonding process
- lemon scent
Spectrum of action:
- bactericidal: EN 13727 (S. aureus, P. aeruginosa, E. hirae)
- fungicidal: EN 13624 (C. albicans)
- tuberculocidal: EN 14348, EN 14563 (M. Terre)
- virucidal, also HIV, HBV, HCV: EN 14476 (Poliovirus, Adenovirus, Parvovirus)
- 100 g of the preparation contains: # 7.7 g of dimethyl-didecyl ammonium chloride, # 15 g of phenoxyethanol
- 100 liters of disinfecting solution can be obtained from one liter of the preparation.
Package; - 1l
Zeta 7 Spray 750ml impression disinfection
Ready-to-use disinfectant specially designed for quick and very effective disinfection of silicone, alginate, polyether and polysulfide impressions. The use of the preparation makes the gypsum flow easier when casting models, and the reproduced details are more precise. It also reduces possible blistering
Advantages:
- a broad spectrum of activity (bactericidal, fungicidal, tuberculocidal, virucidal, also HIV, HBV, HCV)
- does not change the shape and dimensions of the impressions
- compliant with European standards
- compatible with gypsum
- lemon scent
Package:
- 750ml bottle
Zeta 3 Wipes POP-UP 100pcs Wipes for disinfection PROMOTION
Disinfecting cloths designed for quick and very effective disinfection and cleaning of medical equipment surfaces after patients (handles, shelves, armchairs, contra-angles, dental instrument trays, film stands, lamp holders, etc.).
Advantages:
- broad biocidal activity
- does not contain aldehydes
- dermatologically tested
- lemon scent.
Spectrum of action;
- bactericidal: according to the new rules of DGHM / VAH 09/2001
- fungicidal: according to the new rules of DGHM / VAH 09/2001
- tuberculocidal
- virucidal, also HIV, HBV, HCV (Adenovirus, Rotavirus, Norovirus)
- active substances: # 42 g of ethanol, # 0.05 of didecyl-dimethylammonium chloride.
Package:
- 100 pcs
Mediwax hand emulsion 330ml with a pump
Hand care and regeneration emulsion with beeswax:
- recommended for everyday skin care, especially sensitive, dry and damaged skin
- recommended for people who frequently wash and disinfect their hands or have frequent contact with cleaning agents
- protects, nourishes and regenerates the skin
- rich in natural nutrients, moisturizing, moisturizing and smoothing the skin - contains beeswax, hyaluronic acid, collagen, elastin, vitamin complex
- and oils of coconut, apricot kernel and lemon
- It spreads easily on the skin and is perfectly absorbed without leaving an oily layer
- has a pleasant, delicate fragrance
- it is very efficient
Package:
- 330 ml pump bottle
Ultrasonic cleaner for dentures Sonic Denture Cleaner
Ultrasonic cleaner Sonic Denture Cleaner Suitable for cleaning acrylic, flexible, partial dentures, as well as other removable prosthetic restorations. Can also be used for removable orthodontic appliances, retainers or splints for athletes and bruxism.
Characteristics:
- The device is powered by two AA batteries (not included)
- The Sonic Denture Cleaner can be used for daily cleaning.
- Quickly and safely removes various stains, deposits, limescale, food residues, etc.
- You can use a variety of denture cleaning solutions, such as MaxiFresh, or just water.
Directions for use:
- insert the batteries
- remove the transparent container from the washer,
- Pour the cleaning solution into about 2/3 of the container or just water.
- put a prosthesis or other element to be cleaned in the solution.
- put the container with the liquid in the right place in the ultrasonic cleaner
- close the flap and turn on the button. The washer will start working immediately, emitting a characteristic sound of ultra-vibrations
- clean for 10-15 minutes at a time. After this time, turn off the washer.
- after the cleaning process, remove the transparent container from the washer, empty the contents and wash thoroughly before the next use.
Package:
- 1pc (without battery)
Face shield helmet + 10 removable foils GREAT PRICE
Protective helmet with removable foils
Features:
- Provides hygienic and comfortable work.
Attention:
- face mask is not included.
Package:
- 1 piece. holder.
- 10 pcs of replaceable foils.
KN95 FFP2 mask 10 pcs
Advantages:
Filtration rate: ≥95%
Provides FFP2 / KN95 protection level
High comfort of use
One size fits all
Contains high-quality filter cartridges with advanced statically charged microfibers for easy inhalation and exhalation
Light construction improves comfort during use and extends the wearing time
Attachment over the ears, elastic band.
Package:
- 10 pcs