ButylParaben, E209, CAS no.94-26-8, food and cosmetic antioxidant/preservative, manufacturing process via chemical synthesis, 4-hydroxybenzoic acid (Paraben) and 1-butanol as raw materials. ButylParaben used as an antifungal agent in food active against molds and yeasts, and less active against bacteria. Butylparaben is in the paraben family (Ethylparaben, Methylparaben Propylparaben) of preservatives used by the food, pharmaceutical, and personal care product industries. As an experienced ButylParaben manufacturer and supplier, we has been supplying and exporting ButylParaben 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. ButylParaben powder Specification ITEM SPECIFICATIONS Preperty: White crystalline powder Content %: 99.0 Melting Point C: 67-72 Loss in dry,% 0.5 Acid degree: qualified Sulfate (counted by SO42-),% 0.024 4-Hydroxybenzoic acid and Salicylic acid Qualified AS,%: 0.0003 Heavy metal (count by Pb),%: 0.001 Remain in burning % 0.1
Sodium Diacetate, E262,CAS no.126-96-5, Sodium Diacetate is a white crystalline powder with an acetic acid odor. Functions: Inhibits growth of micro-organisms; Aroma/flavour enhancing; pH control agent. As a buffering agent, sodium diacetate is used in meat products to control their acidity. As a food preservative, sodium diacetate used to inhibit the growth of various microorganisms in meat products, thus it can be used as a preservative and safeguard for food safety and shelf life extension. As an experienced Sodium Diacetate manufacturer and supplier, we has been supplying and exporting Sodium Diacetate 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. Sodium Diacetate powder Specification Item Specification Appearance White, hygroscopic crystalline solid with an acetic odour Free Acetic Acid (%) 39.0- 41.0 Sodium Acetate (%) 58.0- 60.0 Moisture (Karl Fischer method, %) 2.0 Max pH (10% Solution) 4.5- 5.0 Formic acid, formates andother oxidizable (as formic acid) 1000 mg/ kg Particle Size Min 80% Pass 60 mesh Arsenic (As) 3 mg/ kg Lead (Pb) 5 mg/ kg Mercury (Hg) 1 mg/ kg Heavy Metal (as Pb) 0.001% Max
Citric Acid Monohydrate, E330, CAS no.5949-29-1, Colorless crystals or white crystalline powder/granular. It is used in the food and beverage industry as an acidulent in cold drinks, soft drinks, candy, cookies, canned foods, jams, and fruit juices. As an experienced Citric Acid Monohydrate manufacturer and supplier, we has been supplying and exporting Citric Acid Monohydrate and Citric Acid Anhydrous 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. Citric Acid Monohydrate Specification Item BP2009 USP32 FCC7 E330 JSFA8.0 Characters Colourless Crystal or White Crystal powder Identification Pass test Clarity and Color of solution Pass test Pass test Light transmittance Water 7.5% 9.0% 7.5% 9.0% 8.8% 8.8% 8.8% Content 99.5%ï½?100.5% 99.5% 100.5% 99.5% 100.5% 99.5% 99.5% RCS Not exceeding Not exceeding A 0.52,T 30% Not exceeding Not exceeding the standard the standard the standard the standard
Higenamine HCL, CAS No.11041-94-4, is a hydrochloride salt of Higenamine which is initially isolated from a variety of plants, and available as a white powder. Higenamine Hcl is a beta-2 adrenergic receptor agonist. Higenamine, also known as Norcoclaurine, has become quite popular in recent years as a fat-burning and energy supplement. It can be found in hundreds of multi-ingredient supplements, from fat-burners to pre-workouts. As an experienced Higenamine HCL manufacturer and supplier, we has been supplying and exporting Higenamine HCL 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. Higenamine HCL Specification ITEMS STANDARD Description Off-white powder Identification 1).IR 2)UV HNMR Comply with the structure LC-MS Comply with the structure Assay 98% (by LC-MS) Melting point(C) 260-262C Water by KF( %) 1.0 Heavy Metals 20ppm Related substances:( %)Any single impuritiesTotal impurities 0.5 2.0 Residue on ignition( %) 0.1
L-Alanine, CAS No.56-41-7, white crystal powder used as safe nutrition supplements. L-Alanine can be used in break, fruit tea, milk food, beverage as a nutritional supplement. As an experienced L-Alanine manufacturer and supplier, we has been supplying and exporting L-Alanine 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. L-Alanine powder Specification Item STANDARD Identification, (IR) Positive Assay (C3H7NO2) ,%(on dried basis) 99.0~101.0 Specific rotation +14.3~ +15. State of solution, % 98.0 Chloride(as Cl),% 0.020 Ammonium (as NH4),% 0.02 Sulphate (as SO4),% 0.020 Iron(as Fe), ppm 10 Heavy metals (as Pb), ppm 10 Arsenic(as As2O3), ppm 1 Other amino acids Meets the requirements Loss on drying, % 0.20 Residue on ignition(as sulphated ash), % 0.10 pH value (1.0g/20mL water) 5.7~6.7
Epsilon-Poly-L-Lysine, also called Polylysine, CAS No.28211-04-3, is manufactured by fermentation process. It is widely used as food preservative. -Polylysine can inhibit the growth of Gram-positive and Gram-negative bacteria, yeasts, moulds, bacteria. Polylysine can be used in cooked rice, cakes, snacks, noodles, drinks, brewing, meat products, canned food, etc. As an experienced Epsilon-Poly-L-Lysine manufacturer and supplier, we has been supplying and exporting Epsilon-Poly-L-Lysine 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. Epsilon-Poly-L-Lysine powder Specification ITEM STANDARD Description Pale yellow powder �µ-Polylysine Purity 95% Loss on drying 10% Residue on ignition 1% Heavy metals 20ppm Arsenic 4ppm
Potassium Tripolyphosphate, E451, CAS no.13845-36-8, appears as a white powder, used as a sequestrant, buffering agent, an emulsifier, and a texturizer in processed meat, fish and cheese. It is also highly soluble in aqueous solutions and has excellent dispersion properties. Applications for Potassium Tripolyphosphate include in low sodium meats, processed seafood and cheeses, soups and sauces, noodle products and modified starches. As an experienced Potassium Tripolyphosphate manufacturer and supplier, we has been supplying and exporting Potassium Tripolyphosphate 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. Potassium Tripolyphosphate Specification ITEM STANDARD Appearance White powder Assay (%) 95.0 Water insolubel matter (%) 0.2 pH (1% Solution, 25) 9.2- 11.1 P2O5 (%) 47 Fluorid (F) 10 ppm Iron (Fe) 10ppm Arsenic (As) 3ppm Lead (Pb) 10ppm Mercury 1ppm Heavy Metal (as Pb) 15ppm
Nisin, E234, CAS no.1414-45-5 is manufactured by fermentation process, used as safe natural food preservative. Nisin is used and applied in meat products, dairy products, canned seafood, drinks, fruit drinks, liquid eggs and egg products, condiments, winemaking, baked goods, convenience food, incense fragrances, cosmetics field, etc.. during production to extend shelf life by suppressing Gram-positive spoilage and pathogenic bacteria. As an experienced Nisin manufacturer and supplier, we has been supplying and exporting Nisin 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. Nisin Specification ITEM STANDARD Appearance Light brown to cream white powder Potency (IU/ mg) 1000 Min Loss on drying (%) 3 Max pH (10% solution) 3.1- 3.6 Arsenic 1 mg/kg Lead 1 mg/kg Mercury 1 mg/kg Total heavy metals ( as Pb) 10 mg/kg Sodium chloride (%) 50 Min Total plate count 10 cfu/g Coliform bacteria 30 MPN/ 100g E.coli/ 5g Negative Salmonella/ 10g Negative
Sodium Tripolyphosphate, E451, CAS no.7758-29-4, a sodium salt of Phosphoric Acid, white granular or powder, water soluble, the sodium salt of the polyphosphate penta-anion. Sodium Tripolyphosphate functions as a binder, stabilizer, and sequestrant, commonly used in cake mixes, meringues, juices, hams, peas, lima beans, cured pork, sausages, and algin desserts. As an experienced Sodium Tripolyphosphate manufacturer and supplier, we has been supplying and exporting Sodium Tripolyphosphate 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. Sodium Tripolyphosphate Specification ITEM STANDARD ASSAY (%) (Na5P3O10) 95 MIN APPEARANCE WHITE GRANULAR P2O5 (%) 57.0 MIN FLUORIDE (PPM) 10MAX CADMIUM (PPM) 1 MAX LEAD (PPM) 4 MAX MERCURY (PPM) 1 MAX ARSENIC (PPM) 3 MAX HEAVY MENTAL (AS PB) (PPM) 10 MAX CHLORIDES (AS CL) (%) 0.025 MAX SULPHATES (SO42-) (%) 0.4 MAX SUBSTANCES NOT DISSOLVED IN WATER (%) 0.05 MAX PH VALUE (%) 9.5 â?? 10.0 LOSS ON DRYING 0.7% MAX HEXAHYDRATE 23.5% MAX WATER-INSOLUBLE SUBSTANCES 0.1% MAX HIGHER POLYPHOSPHATES 1% MAX
Categories Amino Acid Qty in 20FCL 10000kg Min Order 500kg Origin China Packaging Factory Packaging or Neutral Certificate ISO, Kosher, Halal, BRC CAS No. 71-00-1 HS Code 293329 Specification FCC/EP/USP L-Histidine powder, CAS No.71-00-1, non essential amino acid manufactured by fermentation from carbohydrate sources, no raw materials of animal origin are used in the manufacturing process. Function and uses:L-histidine plays a key role in production of red and white blood cells. Histidine is used as a amino acid supplement and chelator (binder) in zinc and copper supplements. Specifications complies with FCC/EP/USP. As an experienced L-Histidine manufacturer and supplier, we has been supplying and exporting L-Histidine 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. L-Histidine Food and Feed grade Specification Items Standards Appearance White crystals or crystalline powder Assay(%) 99.0 101.0 Loss on drying(%) 0.20 Max Residue on ignition(%) 0.10 Max pH 7.0~8.5 Specific rotation(°) +12.0 +12.8 State of solution(%) 98.0 Min Chloride(%) 0.020 Max Ammonium(%) 0.02 Max Sulfate(%) 0.020 Max Iron(ppm) 10 Max Heavy metals(ppm) 10 Max Arsenic(ppm) 1 Max Other Amino acids Not detected.
Xanthan gum 80mesh and 200mesh, cream white powder, E415, CAS no.11138-66-2, food thickener, biosynthetic rubber, mainly made of starch, manufacturing process through fermentation process using the microorganism Xanthomonas Campestrisis. Advantages than other gums: outstanding water solubility and high viscosity; excellent stability in temperature and PH value; Function and uses: Xanthan gum is a high performance thickener as the viscosity of 1% is about 100 times stronger than 1% gelatin solution. As an experienced Xanthan gum manufacturer and supplier, we has been supplying and exporting food grade Xanthan gum 80mesh and 200mesh 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. Food grade Xanthan Gum 80mesh, 200mesh Specification ITEMS STANDARD Appearance white or cream-color and free-flowing powder Viscosity: 1% Xanthan Gum in 1% KCl Brookfield, LVTD,spindle 3.60rpm, 25 1200 1600 mpa.s Assay(on dry basis) 91.0 108.0% Loss on drying(105oC, 2hr) 6.0 12.0% V1 : V2: 1.02 1.45 Pyruvic Acid 1.5% min PH of 1% solution in water 6.08.0 Heavy metals(as Pb) 20 mg/kg max Lead(Pb) 5 mg/kg max Arsenic(As) 2 mg/kg max Nitrogen 1.5% max Ash 13% max Particle size 80 mesh: 100% min, 200 mesh: 92% min Total plate count 2000/g max Yeasts and moulds 100/g max Pathogens germs absence S. aureus Negative Pseudomonas aeruginosa Negative Salmonella sp. Negative C. perfringens Negative
Ferrous Lactate, E585, CAS no.5905-52-2, is a ferrous salt of lactic acid manufactured process through neutralizing lactic acid. Ferrous Lactate is widely used as acidity regulator in food, beverage, dairy product, powder drinks, baby food and bakery. As an experienced Ferrous Lactate manufacturer and supplier, we has been supplying and exporting Ferrous Lactate 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. Categories Preservatives Qty in 20 FCL 20000kg Min Order 1000kg Origin China Packaging Factory Packaging or Neutral Certificate ISO, Kosher, Halal, BRC E No. E585 CAS No. 5905-52-2 HS Code 291811 Specification FCC/USP Ferrous Lactate Food grade Specification Ferrous lactate 96% .Min Loss on drying 20% .Max Chloride(CI) 0.1% .Max Iron (Fe 3+ ) 0.6% .Max Sulphate(SO 4 ) 0.1% .Max PH 5-6 Lead 1 ppm.Max Arsenic 3 ppm.Max
Konjac gum E425,CAS no. 37220-17-0, is manufactured from the root of the konjac plant. It is composed of 40% Glucomamman and is used in Asia to create a flour and a high viscosity jelly. Konjac gum powder has many characteristics such as hydrophilic, thickening property, stability, emulsification, suspension, gel and film forming properties in food. As an experienced Konjac gum manufacturer and supplier, we has been supplying and exporting Konjac gum 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. Konjac Gum Food grade Specification E Number E425 Einecs No 253-404-6 CAS No. 37220-17-0 HS Code 1302399090 ITEMS STANDARD Appearance white powder Viscosity(mpa.s) 20000 mPas min 36000 mPas min Gluomannan content 80% min 90% min Appearance white or cream-color and free flowing powder Particle size 120 â?? 200 mesh Loss on drying 10% max PH of 1% solution in water 5.0-7.0 Lead(Pb) 1.0 mg/kg max Arsenic(As) 3.0 mg/kg max SO2 0.5 g/kg max Insolubles 6% max Total plate count 5000 cfu/g max Yeasts and moulds 100 cfu/g max Coliform Negative Salmonella Negative
CAS No. : 5026-62-0 Chemical Formula : C8H7O3 H.S.code : 291619 E No. : E218 Weâ??re Methyl p-hydroxybenzoate Manufacturers, Suppliers and Wholesalers in China.Based on our 15 years in food additives & ingredients market, we have a knowledge of China market and manufacturers. We can help our abroad customers save time selecting good manufacturers and update the current market in China. Methyl p-hydroxybenzoate, E218, CAS No.5026-62-0, also called methyl paraben, is an organic compound manufactured through chemical synthesis, available as White crystalline powder used as antioxidants. Methyl P-Hydroxybenzoate is often used as an anti-fungal food preservative in chewing gum, dairy products, fat spreads, fruit products, etc. It can inhibit drosophilia growth in the larvae and pupae stages. As Methyl p-hydroxybenzoate Manufacturers, Suppliers and Wholesalers in China, we supply Methyl p-hydroxybenzoate food grade FCC,USP,EP. Methyl p-hydroxybenzoate powder Specification ITEM STANDARD Appearance White crystalline powder Purity (on dry base)% 99 Melting point 125-128 Sulphated ash %
D-Xylose powder, E967, Cas no. 58-86-6, sugar substitute, commonly called wood sugar, obtained from plant cell walls and fiber. D-Xylose is a white crystalline powder. It is a natural nutrient sweetener, and is manufactured from corn, sugarcane, and birch. It has a cool and refreshing taste and has the same sweetness as sucrose, and it is often used to sweeten a wide variety of foods and beverages such as such as breads, butter, meat products and beverage industry as flavoring agent and sweetener. It is also used as the raw material for hydrogenation to produce Xylitol. As an experienced D-Xylose manufacturer and supplier, we has been supplying and exporting D-Xylose 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. D-Xylose powder food grade Specification ITEM STANDARD CAS No. 58-86-6 Chemical Formula C5H10O5 Specification BP 93 Packing In 25kg paper bags Functional use Sweetener Items Specifications Appearance White crystalline powder D-Xylose content 98.5% min Transmittance 98.0% min Specific rotation +18.5 â?? +19.5�° Loss on drying 0.5% max Melting point 145 â?? 150�°C Residue on ignition 0.05% max Arsenic 0.0001% max Heavy metals 0.0005% max Sulfate 0.001% max Chloride 0.0005% max Free Acid 0.025% max
Gum Arabic, E414, CAS no.9000-01-5, a natural gum made of hardened sap taken from two species of the acacia tree. Gum Arabic appears as an off-white to yellowish granular or powder. It is used as food thickeners in food and beverages such as in icing, fillings, chewing gum and other confectionery. Nutritional properties:Enrichment in soluble dietary fibers; Improvement of digestive comfort; Source of prebiotic fiber. As an experienced Gum Arabic manufacturer and supplier, we has been supplying and exporting Gum Arabic 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. Gum Arabic Specification ITEMS STANDARD Appearance Off-white to Yellowish Granular or Powder Odor Own inherent smell, no odor Viscosity ( Brookfield RVT, 25%, 25, Spindle #2, 20rpm, mPa.s) 60- 100 pH 3.5- 6.5 Moisture(105â??, 5h) 15% Max Solubility Soluble in water, insoluble in ethanol Nitrogen 0.24%- 0.41% Ash 4% Max Insolubles in Acid 0.5% Max Starch Negative Dannin Negative Arsenic (As) 3ppm Max Lead (Pb) 10ppm Max Heavy Metals 40ppm Max E.Coli/ 5g Negative Salmonella/ 10g Negative Total Plate Count 1000 cfu/ g Max Specifications of Acacia Gum Spray-dried Powder : ITEMS STANDARD Appearance White to off-white Powder Odor Own inherent smell, no odor Viscosity ( Brookfield RVT, 25%, 25, Spindle #2, 20rpm, mPa.s) 60- 100 pH 3.5- 6.5 Moisture(105, 4h) 10% Total ash 4% Acid insoluble ash 0.5% Acid insoluble matter 1% Nitrogen 0.24%- 0.41% Starch or dextrin Negative Tannin Negative Arsenic (As) 2 mg/kg Lead (Pb) 3 mg/kg Heavy Metals 20 mg/kg E.coli/ 5g Negative Salmonella spp./ 10g Negative Total Plate Count 5000 cfu/ g
Product Description Categories Sweeteners Qty in 20 FCL 9000kg, 11250kg Min Order 500kg Origin China Packaging Factory Packaging or Neutral Certificate ISO, Kosher, Halal, BRC E No. E951 CAS No. 22839-47-0 HS Code 292429 Specification FCC/USP Aspartame is an artificial sweetener, like Acesulfame Potassium, Sucralose, Sodium Saccharin, Sodium Cyclamate and Neotame. It is widely in daily food products to replace sugar. There are too many types of Aspartame in the market, generally are powder 100mesh, Granular 20-60mesh, Fine Granular 60-100mesh, HDP 100-200mesh and Super Fine Powder 300mesh. Weâ??re China Aspartame supplier not only sell Aspartame but also provide manufacturers analysis, market price trends, free samples and also other food additives for mix combined. Aspartame Powder 100mesh Specification Test Item Specification Appearance White Powder Odor/Taste Conforms to Quality Standards Identification Meets Requirements Assay (on dry basis) 98.0% to 102% Loss on Drying 4.5% Residue on Ignition / Sulphated Ash < 0.2% Optical (Specific) Rotation +14.5 and +16.5 Conductivity 30 Scm-1 Transmittance 95% Extraneous Matter Free from material foreign to product pH (0.8% Solution) 4.5 ~6.0 Heavy Metal (as Pb) 10 ppm Lead < 1 ppm Arsenic < 3 ppm Residual Solvents Meets Requirements 5-benzyl-3,6-dioxo-2 Piperazineacetic Acid (DKP) 1.5% Other Related Substances 2.0% USP/NF; 1.5% EP L-phenylalanine 0.5% Solubility Completely Dissolves Particle Size NMT 5% on 100 mesh Bulk Density 0.3 +/- 0.1 g/mL Total Aerobic Plate Count 250 CFU/g Yeast and Mold Count 100 CFU/g Coliforms 3.0 MPN/g Escherichia Coli Negative/g Salmonella Negative/25g
Potassium Acetate, E261, CAS no.127-08-2, a potassium salt of acetic acid, white crystal powder. Potassium Acetate manufacturing process via chemical synthesis, potassium hydroxide or potassium carbonate and acetic acid as raw materials. Potassium Acetate is used as a food preservative and acidity regulator to help prevent bacterial growth. It is better than Sodium Acetate to avoid Sodium. Also used as a deicer instead of chloride salts such as calcium chloride or magnesium chloride. As an experienced Potassium Acetate manufacturer and supplier, we has been supplying and exporting Potassium Acetate 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. Potassium Acetate powder food grade Specification Product Potassium Acetate CAS 127-08-2 INS 261 E261 i Structure Molecular formula C2H3KO Properties Colorless or white crystalline powder.Slightly acid taste,easy deliquescence. Quality Specifications Standard Item BP2012 ACS Grade USP35 EP7.0 Content 99.0% 99.0% 99.0% 100.5% (Dry basis) 99.0% 101.0% (Dry basis) pH test 7.5 9.0 (1 in 20 soln) 6.5-9.0 5% solution at 25.0 7.5 8.5 (5% Solution) 7.5-9.0 Loss on drying 8.0% (150, 2 h) 1.0% 3% Heavy Metals 2 mg/kg 5ppm 0.002% 4ppm Sodium 0.03% 0.5% Insoluble matter 0.005% Chloride(Cl) 0.003% 200ppm Phosphate(PO4) 0.001% Sulfate(SO4) 0.002% 200ppm Iron(Fe) 5ppm 20ppm Calcium(Ca) 0.005% Magnesium(Mg) 0.002% Reducing substancespassed test Aluminum salts1ppm
Agar agar, E406, CAS 9002-18-0, food thickener, polysaccharides extracted from seaweed. Properties: coagulability, stability, form the complex with some materials. It can be used as a thickener, coagulant, suspending agents, emulsifiers, preservatives and stabilizers. Agar Agar is widely used in a variety of drinks, jelly, ice cream, cakes, candy, canned food, meat products and so on. Function and uses: It is one of the most extensive use of sodium alginate in the word. Agar Agar is hydrophilic colloid with dividing into strips and powder. As an experienced Agar agar manufacturer and supplier, we has been supplying and exporting Agar agar 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.
MethylParaben, E218, CAS no.99-76-3, HS code291829, is an anti-fungal agent often used in a variety of cosmetics and personal-care products. It is also used as a food preservative. Methylparaben is commonly used as a fungicide in Drosophila food media. As an experienced MethylParaben manufacturer and supplier, we has been supplying and exporting MethylParaben 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. MethylParaben Specification ITEM SPECIFICATION Appearance White crystalline powder Purity 99.0% Melting point 125- 128 Residue on ignition 0.1% Acidity (mg/g) 4.0- 7.0 Related substances 0.5% Identification Conform Clarity of solution Clear and transparent Heavy metal (as Pb) 10 ppm