Features: 1. Advanced flat surfaced alcohol sensor, high sensitivity 2. Rapid detect results quick response and resume 3. High accuracy, detection range: 0.000-0.199% BAC / 0.00-1.99 BAC / 0.00-0.99 mg/L 4. Easy to use, Light weight, With a bag for it, easy to carry 5. Low power consumption , auto power-off, Long span life 6. Sensor fault self checking 7. Blue-colored backlight LCD display. Description: Color: Black LCD Back light: Blue Sensor: Advanced flat surfaced semiconductor alcohol sensor Warm-up time: Within 10 seconds Respond time: Within 5 seconds Operating temperature range: 5~40 Detection range: 0.000-0.199% BAC / 0.00-1.99 BAC / 0.00-0.99 mg/L Digital display results (% BAC / BAC / mg/L) Power input: 3V (3 x alkaline battery, not included) Net weight: 70
2-Naphthol Basic information Chemical Properties Application Preparation Product Name: 2-Naphthol Synonyms: c.i.37500;c.i.azoiccouplingcomponent1;c.i.developer5;Developer A;Developer AMS;Developer BN;developera;developerams CAS: 135-19-3 MF: C10H8O MW: 144.17 EINECS: 205-182-7 Product Categories: Fluorescent;Naphthalene;pigments;alcohol;MICROCIDIN;Color Former & Related Compounds;Developer;Functional Materials;Intermediates;Aromatic Compounds;Alphabetical;Bioactive Small Molecules;Biochemicals and Reagents;Building Blocks;C9 to C20+;Cell Biology;Chemical Synthesis;Fluorescent Indicators and Probes;Fluorescent Probes;Labels;N;Organic Building Blocks;Oxygen Compounds;Particles and Stains;pH Sensitive Probes and Indicators;Phenols;Dyestuff Intermediates;Aromatics Mol File: 135-19-3.mol 2-Naphthol Chemical Properties Melting point 120-122 C(lit.) Boiling point 285-286 C(lit.) density 1,28 g/cm3 vapor density 4.97 (vs air) vapor pressure 10 mm Hg ( 145.5 C) refractive index 1.5762 (estimate) Fp 153 C storage temp. Refrigerator solubility methanol: soluble1g/10 mL, clear, colorless to light yellow pka 9.51(at 25C) form Powder, Crystals or Granules color White PH Range Non& uorescence (8.5) to blue & uorescence (9.5) Water Solubility 1 g/L (20 C) �»max 226nm, 265nm, 275nm, 286nm, 320nm, 331nm Merck 14,6384 BRN 742134 Stability: Stable. Combustible. Dust may form explosive mixture with air. Incompatible with strong oxidizing agents, phenol. Major Application Display device, semiconductors, photoimaging materials, inks, toner, chalk, security paper, molding materials, tin plating method, rubber, adhesive, leather, detergent, hair dyes, antimitotic drug, anticancer agent, antiinflammatory agent, treatment of acne vulgaris (pimples) and other dermal ailments (rashes, scratches, blemishes, hair loss), disorders InChIKey JWAZRIHNYRIHIV-UHFFFAOYSA-N CAS DataBase Reference 135-19-3(CAS DataBase Reference) NIST Chemistry Reference 2-Naphthalenol(135-19-3) EPA Substance Registry System 2-Naphthalenol (135-19-3) Safety Information Hazard Codes Xn,N Risk Statements 20/22-50 Safety Statements 24/25-61 RIDADR UN 3077 9/PG 3 WGK Germany 2 RTECS QL2975000 F 8 Autoignition Temperature 430 C TSCA Yes HazardClass 9 PackingGroup III HS Code 29071590 Hazardous Substances Data 135-19-3(Hazardous Substances Data) Toxicity LD50 orally in Rabbit: 1960 mg/kg LD50 dermal Rabbit > 10000 mg/kg 2-Naphthol Usage And Synthesis 2-Naphthol Preparation Products And Raw materials
**Ready stock in Turkey** -Price: USD11,000/CIF by air *without compressor -Price: USD12,000/CIF by air *with compressor -Operation Features- Inspiration Pressure: 2-100 mBar Inspiration Duration: 0.1-10 Sec. Peep Pressure: 0-50 mBar Breathe Speed: (c) 1-150/mins. (y) 1-100/mins. Flow: (c) 1-60 lt/mins. (y) 2-120 lt/mins. O2 Mixture: 21-100% Spontaneous Pressure Support: 0-100 mBar I/E Rate: 1:10 (x60*)-10:1 (c): Child, (y): Adult
US$ 2.65 - 5.55 / Piece Get Freight Cost Calculate Margin 10000 Pieces Minimum Order 3 - 30 days Lead Time Product Details Model Number : S M L---#6173 Brand Name : WinHealth Origin : China (mainland) Small Orders : Accepted Key Specifications/Special Features: Surgical gown MATERIAL: SMS ,SMMS , SSMMS , Spunlace Characteristic : Antistatic , anti-blood, water resistant , alcohol resistant Gram weight :30-70g/ Style : with knitted cuff, hook and loo[ fatener Four waist belts with card , book folding Production process : Ultrasonic , double stitch Three line /four line /five lie overlock sewing Size:S,M,L,XL,XXL,XXXL Package:1pc/sterile pouch , , 50pcs /ctn Usage field :suitable for hospital /medical and biological research institution, surgical gown can protect the medical workers from being infected by the blood /body fluid and other infectious material Shipping Information: FOB Port: China (Mainland) Lead Time : 3 - 30 days Dimensions per Unit : 120 X 80 X 35 Centimeters Weight per Unit : 100 Grams Units per Export Carton: 50 Export Carton Dimensions L/W/H : 585 X 450 X 420 Centimeters Export Carton Weight : 11 Kilograms
US$ 0.385 - 1.85 / Piece 10000 Pieces Minimum Order 3 - 30 days Lead Time Product Details Model Number : S M L----#2074 Brand Name : WinHealth Origin : China (mainland) Small Orders : Accepted Key Specifications/Special Features: Blue disposable factory waterproof cpe plastic apron/ isolation gown Our PE Apron/ Gowns provide an effective, low-cost garment solution that protects against dry particulates such as dirt and dust in the workplace. They are lightweight, breathable, comfortable and can be used in a variety of setting such as hospitals, food processing plants and general industrial applications. * Raw material: 100% Virgin material. It can be made of HDPE, LDPE, and CPE * With thumb holes and sleeves * Multi-color for clients to choose * Other related products: Disposable Aprons, Disposable Gloves, Caps. Shipping Information: FOB Port: China (Mainland) Lead Time : 3 - 30 days Dimensions per Unit : 120 X 80 X 35 Centimeters Weight per Unit : 15 Grams Units per Export Carton : 50 Export Carton Dimensions L/W/H : 585 X 450 X 420 Centimeters Export Carton Weight : 11 Kilograms Main Export Markets: Asia Australasia Central/South America Eastern Europe Mid East/Africa North America Western Europe Payment Details: Payment Method : Telegraphic Transfer (TT,T/T) Primary Competitive Advantages: Brand-name Parts Origin Distributorships Offered Experienced Staff International Approvals Packaging Price Product Features Product Performance Prompt Delivery Quality Approvals Reputation Service Small Orders Accepted Quickly Delivery High Quality Globally Delivery
Specification item value Classification Alcohol CAS No. 107-88-0 Other Names 1,3-Butanediol MF C4H10O2 EINECS No. 203-529-7 Place of Origin China Grade Standard Industrial Grade, Medicine Grade Purity 99.8 Appearance colorless liquid Application solvent Brand Name chemfine Model Number Alcohol Density 1.069 Boiling point 229.2 FLASH POINT 121 Melting point 20.1
EthylParaben, E214, CAS number 120-47-8, food and cosmetic antioxidant/preservative, manufacturing process via chemical synthesis, 4-hydroxybenzoic acid (Paraben) and ethyl alcohol as raw materials. Butylparaben is in the paraben family (ButylParaben, Methylparaben Propylparaben) of preservatives used as an anti-fungal preservative in baked goods, creams and pastes, jams and jellies, syrups, processed vegetables, oils, seasonings, dairy products, beverages and skin care products. As an experienced EthylParaben manufacturer and supplier, we has been supplying and exporting EthylParaben for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. EthylParaben powder Specification ITEM SPECIFICATION Characters Colorless crystals or white crystalline powder Purity (on dry base) % 99.0-100.5% Melting Point 115-118 Acidity qualified Sulfate(SO42-) % / Heavy Metal (Pb) % / Heavy Metal(AS) % / Loss on Drying % 0.50 Residue % 0.10 p-Hydroxybenzoic Acid and Salicylic Acid / Appearance of Solution Clear Identification / Related Substances qualified Organic Volatile impurities /
Absolute ethanol refers to an aqueous solution of ethanol with high purity, which is a mixture of ethanol and water. Generally, the ethanol solution with the concentration of 99.5% is anhydrous ethanol. Ethanol is an important organic solvent, which is widely used in medicine, coatings, sanitary products, cosmetics, oil and other aspects, accounting for about 50% of the total consumption of ethanol. Ethanol is an important basic chemical raw material. 75% ethanol aqueous solution has strong bactericidal ability and is a commonly used disinfectant. Specially refined ethanol can also be used to make beverages. Similar to methanol, ethanol can be used as energy. Specification item value Classification Alcohol CAS No. 64-17-5 Other Names Ethanol absolute MF C2H6O EINECS No. 200-578-6 Place of Origin shandong Grade Standard Electron Grade, Food Grade, Industrial Grade, Medicine Grade Purity 70% 75% 95% 96% 99.9% Appearance Colorless transparent liquid Application Disinfect/Chemical/Solvent/pharmaceuticals Brand Name xiangyu Model Number xiangyu CN NO. 32061 UN NO. 1170 Molecular weight 46.07 Package 1L/5L/160KG/800KG/ISO tank HS CODE 2207100010 Density 0.789g/cm3 Flash point 12â?? Ignition temperature 363â?? Solubility Miscible with water in any ratio boiling point 78
Frankincense Hydrosol 5 Liter Frankincense Hydrosol, the benefits and uses Frankincense Hydrosol is produced through the steam or hydro distillation process of the Boswellia Carteri resin. Hydrosols are also known as herbal distillates, essential waters, hydrolats and herbal waters. This results in a hydrosol with a superior aroma and great properties yielding the much-needed benefits of the resin, in a gentler way than the pure essential oil. Frankincense Hydrosol is a beautiful skin-healer that boasts anti-inflammatory, antibacterial and analgesic properties, and an added ability to tone and improve skin texture. As Hydrosols are safer and gentler than pure Essential Oils, it is a great choice for people with sensitive systems, including children, the elderly and even pets. Frankincense Hydrosol can be used daily as a refreshing skin-toning facial spray that will leave your skin with noticeable softer, more delicate texture. Boswellia Hydrosol can also help deepen breathing by opening the airways, drying mucus in the lungs and expelling phlegm. Although dilution is still recommended for children and pets, hydrosols are less concentrated and therefor do not need dilution for use. The hydrosol can also be used to prepare the mind for prayer, meditation or yoga. The fresh scents deepen the breath and helps the heart connect with peace. Meditation sprays containing the hydrosols, aids us in finding the solace many of us need in our stressful lives. How do I use Frankincense Hydrosol? As a toner Combine 50ml Witch Hazel (non-alcoholic), 25ml Rose Water and 25 ml Frankincense Hydrosol in a 100ml spray bottle. Spritz on a clean skin after cleansing to balance and hydrate the skin. A few drops of your favorite essential oil can also be added should you prefer. Oils that are beneficial to the skin includes Carrot Seed, Sandalwood or Sweet Orange to name a few. Always shake well before use when adding Essential oils. As a compressor Since Frankincense has healing and anti-inflammatory properties, it aids as a compressor to relieve the pain from wounds or injuries. Place a washcloth in a bowl of cold / hot water for a cold / hot press, pour 100ml of Frankincense hydrosol in a cup and saturate the wash cloth. Wring out the excess liquid and apply the cloth in a desired area. The press will speed up the healing process. As a face mask Add Frankincense hydrosol to Bentonite Clay to form a natural mask. Add 1 tbs bentonite clay with 2 tbs of Hydrosol to form a soft paste. Apply liberally with a mask brush over your skin and wait approximately 5 minutes for the paste to dry, then wash the clay mix off. It is important to note that the mask must not be left on too long, as Bentonite is a volcanic ash and needs to be used with care (Longer is NOT better) and always only use wood, plastic or glass. Please do not use metal utensils with Bentonite Clay.
Frankincense Hydrosol Spray Frankincense Hydrosol, the benefits and uses Frankincense Hydrosol is produced through the steam or hydro distillation process of the Boswellia Carteri resin. Hydrosols are also known as herbal distillates, essential waters, hydrolats and herbal waters. This results in a hydrosol with a superior aroma and great properties yielding the much-needed benefits of the resin, in a gentler way than the pure essential oil. Frankincense Hydrosol is a beautiful skin-healer that boasts anti-inflammatory, antibacterial and analgesic properties, and an added ability to tone and improve skin texture. As Hydrosols are safer and gentler than pure Essential Oils, it is a great choice for people with sensitive systems, including children, the elderly and even pets. Frankincense Hydrosol can be used daily as a refreshing skin-toning facial spray that will leave your skin with noticeable softer, more delicate texture. Boswellia Hydrosol can also help deepen breathing by opening the airways, drying mucus in the lungs and expelling phlegm. Although dilution is still recommended for children and pets, hydrosols are less concentrated and therefor do not need dilution for use. The hydrosol can also be used to prepare the mind for prayer, meditation or yoga. The fresh scents deepen the breath and helps the heart connect with peace. Meditation sprays containing the hydrosols, aids us in finding the solace many of us need in our stressful lives. How do I use Frankincense Hydrosol? As a toner Combine 50ml Witch Hazel (non-alcoholic), 25ml Rose Water and 25 ml Frankincense Hydrosol in a 100ml spray bottle. Spritz on a clean skin after cleansing to balance and hydrate the skin. A few drops of your favorite essential oil can also be added should you prefer. Oils that are beneficial to the skin includes Carrot Seed, Sandalwood or Sweet Orange to name a few. Always shake well before use when adding Essential oils. As a compressor Since Frankincense has healing and anti-inflammatory properties, it aids as a compressor to relieve the pain from wounds or injuries. Place a washcloth in a bowl of cold / hot water for a cold / hot press, pour 100ml of Frankincense hydrosol in a cup and saturate the wash cloth. Wring out the excess liquid and apply the cloth in a desired area. The press will speed up the healing process.
Liquid Extracts S.V. Exports makes premium-quality alcohol-free liquid extracts from the highest quality raw materials. These are made either oil-soluble or water-soluble as per the customer's preference and end usage requirements. For us each client is special therefore we also provide customized solutions while supplying liquid extract and keep a record of the same to enable reproduction of similar extracts at a future time as well. Our belief is to provide integrated wellness therefore we only use superior-quality food-grade solvents for the extraction process. Product Available:- Agar wood, Chamomile German, Harshriangar, Mulberry, Shankhpushpi, Ajowan, Champaca, Henna leaf, Shikakai, Allspice, Cherry, Holy basil, Mustard, Shilajeet, Cinnamon, Honey, Spearmint, Aloevera, Apricot, Clary sage, Coconut, Coffee, Cola nut, Coriander, Japanese Mind, juniper berry, Kalonji, Kewra, Khus, Kewra, Neem leaf, Neroli, Nutmeg, Onion, Orange, Orchid, Strawberry, Sweet orange, Tagetes, Tea tree, Tejpat, Terragon, Arnica, Asafoetida, Babool, Banana, Costus, Cucumber, Cumin, Curry Leaf, Kumquat, Kusum, Lavender, Lemon, Oregano, Papaya, Parsley, Peach, Thyme, Tomarseed, Tomato, Basil, Beeswax, Bel fruit, Bergamot, Betel leaf, Bhringraj, Big cardamom, Black current, Black pepper, Brahmi, Caraway, Cardamom green, Carrot, Cassia bark, Celery herb, Chameli, Chamomile blue, Cypress, Davana, Deodar, Dill herb, Eucalyptus, Fennel seed, Fenugreek, Harshriangar, French lavender, Garlic, Geranium, Ginger, Green apple, Gudhal flower, Haldi, Lemon balm, Lemon grass, Licorice, Lilac, Lime, Lotus, Mace, Marigold, Marjoram, Melon, Mimosa, Mint, Mogra, Motia, Pepper, Peppermint, Peprica, Petit grain, Pimento, Pineapple, Pomegranate, Rajnigandha, Raspberry, Ratrani, Reetha, Rose, Rosemerry, Rosewood, Saffron, Sandalwood, Tuberose, Turmeric, Vanilla, Vetivert, Watermelon, Wintergreen, Yeast, Ylang Ylang Origin: India Packaging Type: For Glass Bottles (10/30/60/100/120/250 ML) For Aluminium Bottles ( 50/100/250/500 ML, 1/5 Liter) For Bulk Packaging ( 25 Liter HDPE Drums, 180 Liter Iron Drums) Minimum Order Quantity: 1 20'ft Container
S.V. Exports makes premium-quality alcohol-free liquid extracts from the highest quality raw materials. These are made either oil-soluble or water-soluble as per the customer's preference and end usage requirements. For us each client is special therefore we also provide customized solutions while supplying liquid extract and keep a record of the same to enable reproduction of similar extracts at a future time as well. Our belief is to provide integrated wellness therefore we only use superior quality food grade solvents for the extraction process. Product Available:- Agar wood, Chamomile German, Harshriangar, Mulberry, Shankhpushpi, Ajowan, Champaca, Henna leaf, Shikakai, Allspice, Cherry, Holy basil, Mustard, Shilajeet, Cinnamon, Honey, Spearmint, Aloevera, Apricot, Clary sage, Coconut, Coffee, Cola nut, Coriander, Japanese Mind, juniper berry, Kalonji, Kewra, Khus, Kewra, Neem leaf, Neroli, Nutmeg, Onion, Orange, Orchid, Strawberry, Sweet orange, Tagetes, Tea tree, Tejpat, Terragon, Arnica, Asafoetida, Babool, Banana, Costus, Cucumber, Cumin, Curry Leaf, Kumquat, Kusum, Lavender, Lemon, Oregano, Papaya, Parsley, Peach, Thyme, Tomarseed, Tomato, Basil, Beeswax, Bel fruit, Bergamot, Betel leaf, Bhringraj, Big cardamom, Black current, Black pepper, Brahmi, Caraway, Cardamom green, Carrot, Cassia bark, Celery herb, Chameli, Chamomile blue, Cypress, Davana, Deodar, Dill herb, Eucalyptus, Fennel seed, Fenugreek, Harshriangar, French lavender, Garlic, Geranium, Ginger, Green apple, Gudhal flower, Haldi, Lemon balm, Lemon grass, Licorice, Lilac, Lime, Lotus, Mace, Marigold, Marjoram, Melon, Mimosa, Mint, Mogra, Motia, Pepper, Peppermint, Peprica, Petit grain, Pimento, Pineapple, Pomegranate, Rajnigandha, Raspberry, Ratrani, Reetha, Rose, Rosemerry, Rosewood, Saffron, Sandalwood, Tuberose, Turmeric, Vanilla, Vetivert, Watermelon, Wintergreen, Yeast, Ylang Ylang Origin: India Packaging Type: For Glass Bottles (10/30/60/100/120/250 ML) For Aluminium Bottles ( 50/100/250/500 ML, 1/5 Liter) For Bulk Packaging ( 25 Liter HDPE Drums, 180 Liter Iron Drums) Minimum Order Quantity: 1 20'ft Container
Basalt Fiber Series Fabric 1. Production: basalt fiber fabric is made of continuous basalt fiber textile yarn through warping, weaving and coating. 2. Weaving methods according to requirements: unidirectional cloth, plain cloth, twill cloth and grid cloth. 2. Application: reinforced mesh cloth, fireproof cloth, fishing rod cloth, luggage decoration cloth, electrical insulation cloth, bulletproof cloth, etc. 3. Packaging: 100M / roll (or customized as required). 4. Performance: high strength, high temperature resistance, good electrical insulation, non hygroscopic, acid and alkali corrosion resistance.High temperature resistance 1000 �° C 5. Specification and model: bfw16 * 20-100 (120) BFW: basalt fiber fabric;Completely replace carbon fiber sheet building reinforcement 16 * 20: the warp and weft density of yarn is 16 and 20 pieces / cm respectively; 100: the width of the fabric is 100 cm; (120): the mass per unit area of fabric is 120 g / m2. BFNP5*5-200(160) BFNP: basalt fiber mesh cloth (coated and shaped); 5 * 5: the longitude and latitude mesh size of the cloth surface is 5 and 5mm; 200: the width of the grid is 200 cm; (160): the weight of grid cloth per unit area is 160g / m2.
Herbal Extract Propolis Resin Healthy Care Propolis Liquid Alcohol Free 25ml Basic Information Place of Origin: Xuchang Brand Name: Super-Sweet Certification: ISO, GMP, HACCP, Kosher, FDA Model Number: 3001 Minimum Order Quantity: 500kgs Price: 19 Packaging Details: 1kgs/foil bag, 20bags/BOTTLE Delivery Time: 10 Payment Terms: T/T Supply Ability: 360
98% Propolis Resin Extract Alcohol Free High Flavonoids Herbal Extract Basic Information Place of Origin: Xuchang Brand Name: Super-Sweet Certification: ISO, GMP, HACCP, Kosher, FDA Model Number: 3001 Minimum Order Quantity: 500kgs Price: 19 Packaging Details: 1kgs/foil bag, 20bags/BOTTLE Delivery Time: 10 Payment Terms: T/T Supply Ability: 360
Factory Supply 100% Natural Pure Alcohol soluble Refined Propolis Extract Resin Basic Information Place of Origin: Xuchang Brand Name: Super-Sweet Certification: ISO, GMP, HACCP, Kosher, FDA Model Number: 3001 Minimum Order Quantity: 500kgs Price: 19 Packaging Details: 1kgs/foil bag, 20bags/BOTTLE Delivery Time: 10 Payment Terms: T/T Supply Ability: 360
Multi Function Bee Hive Equipment Pump Draw Pull Type Plastic Bottom Board For Beehive Basic Information Place of Origin: china Brand Name: SS-bee hive Certification: ISO9001:2008 Model Number: plastic beehive bottom board Minimum Order Quantity: 5000pcs Price: $ 120- $150 Packaging Details: 100pcs /carton unassembled 51*25*50cm for wooden bee hive frames | chinese bee frame | beehive frame Delivery Time: 20-25 days after receiving your prepayment Payment Terms: TT, Western Union, MoneyGram, L/C, D/A, D/P Supply Ability: 100000 Piece/Pieces per Month
Factory Supply 100% Natural Pure Alcohol soluble Refined Propolis Extract Resin Place of Origin: Xuchang Brand Name: Super-Sweet Certification: ISO, GMP, HACCP, Kosher, FDA Model Number: 3001 Minimum Order Quantity: 500kgs Price: 19 Packaging Details: 1kgs/foil bag, 20bags/BOTTLE Delivery Time: 10 Payment Terms: T/T Supply Ability: 360 Health care natural purifed propolis Propolis is known as "purple gold", is bees collected the vegetative shoot and trunk of the resin and mixed with their mandibular gland secretions and beeswax mixed into a with aromatic odor colloidal solids. Propolis has strong bacteriostasis
Refined Propolis Block Raw Propolis Chunks Alcohol Soluble Propolis Resin Place of Origin: Xuchang Brand Name: Super-Sweet Certification: ISO, GMP, HACCP, Kosher, FDA Model Number: 3001 Minimum Order Quantity: 50kgs Price: 19-30 Packaging Details: 1kgs/foil bag, 20bags/carton bee propolis extract Delivery Time: 10 Payment Terms: T/T, L/C, D/A, D/P, Western Union, MoneyGram Supply Ability: 360 Propolis Content: 98% Propolis Pattern: Black Block Mesh Size: 80 Smell: Bee Propolis Smell Flaconoids: Min 10 Shelf Life: 36 Months
Factory Supply 100% Natural Pure Alcohol soluble Refined Propolis Extract Resin Place of Origin: Xuchang Brand Name: Super-Sweet Certification: ISO, GMP, HACCP, Kosher, FDA Model Number: 3001 Minimum Order Quantity: 500kgs Price: 19 Packaging Details: 1kgs/foil bag, 20bags/BOTTLE Delivery Time: 10 Payment Terms: T/T Supply Ability: 360 Variety:: Herbal Extract, Bee Propolis Powder Sample: 100g Free Heavy Metals: 10ppm Max Maca Extract: 5:1 10:1 20:1 Appearance: Brownish Yellow Propolis Packing: 25kg/Fibre Drum With Two Double Plastic Bag With Non-toxic. High Light: propolis block, propolis liquid extract