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36 results found

SRM 2193a Calcium Carbonate pH Standard [used as saturated Ca(OH)2 solution]

Data provided by  National Institute of Standards and Technology

SRM 2193a Calcium Carbonate pH Standard [used as saturated Ca(OH)2 solution] - This Standard Reference Material (SRM) is intended for use in preparing solutions for calibrating electrodes for pH measuring systems at pH values above 11.0. This lot of calcium carbonate (CaCO3) was selected for its low level of alkali metal impurities. However, this SRM is certified ONLY as a pH standard, NOT as a pure substance. A unit of SRM 2193a consists of 30 g of CaCO3. This data is public in the Certificate of Analysis for this material.

Tags: Biosciences and Health,Environment and Climate,Food and Nutrition,

Modified: 2024-02-22

Views: 0

SRM 2378 Fatty Acids in Human Serum

Data provided by  National Institute of Standards and Technology

Donor serum for SRM 2378 was collected from three groups of individuals: (level 1) three healthy donors who took 1000 mg/day of fish oil supplements for a minimum of one month prior to collection; (level 2) three healthy donors who took 1000 mg/day of flaxseed oil supplements for a minimum of one month prior to collection; and (level 3) three healthy donors who did not take either fish or flaxseed oil supplements for one month prior to collection.

Tags: fatty acids,serum,Biosciences and Health,

Modified: 2024-02-22

Views: 0

SRM 2384 Baking Chocolate

Data provided by  National Institute of Standards and Technology

SRM 2384 Baking Chocolate - This Standard Reference Material (SRM) is intended primarily for use in validating methods for determining proximates, fatty acids, calories, vitamins, elements, catechins, caffeine, and theobromine in baking chocolate and similar matrices. This SRM can also be used for quality assurance when assigning values to in-house reference materials. The SRM is baking chocolate prepared from 100 % cocoa beans by a manufacturer of baking chocolate and consists of a single production lot.

Tags: Standard Reference Material,SRM,SRM 2384,baking chocolate,certified values,reference values,food,nutrition,Food and Nutrition,

Modified: 2024-02-22

Views: 0

SRM 2387 Peanut Butter

Data provided by  National Institute of Standards and Technology

SRM 2387 Peanut Butter - This Standard Reference Material (SRM) is intended primarily for use in validating methods for determining proximates, fatty acids, calories, vitamins, elements, amino acids, aflatoxins, and acrylamide in peanut butter and similar matrices. This SRM can also be used for quality assurance when assigning values to in-house reference materials. The SRM is a creamy peanut butter prepared by a manufacturer of peanut butter products. A unit of SRM 2387 consists of three jars of peanut butter containing 170 g each.

Tags: Standard Reference Material,SRM,SRM 2387,peanut butter,certified values,reference values,food,nutrition,Food and Nutrition,

Modified: 2024-02-22

Views: 0

SRM 2950a Respirable Alpha Quartz on Filter Media (Nominal Mass of Alpha Quartz: 5 µg to 500 µg)

Data provided by  National Institute of Standards and Technology

SRM 2950a Respirable Alpha Quartz on Filter Media (Nominal Mass of Alpha Quartz: 5 µg to 500 µg) - This Standard Reference Material (SRM) is intended primarily for the calibration of X-ray diffraction (XRD) spectrometers for the determination of respirable alpha quartz using National Institute for Occupational Safety and Health (NIOSH) Method 7500, or the equivalent. This data is public in the Certificate of Analysis for this material.

Tags: SRM 2950a,respirable,alpha quartz,filter,SRM,Standard Reference Material,Biosciences and Health,

Modified: 2024-02-22

Views: 0

SRM 2973 Vitamin D Metabolites in Frozen Human Serum (High Level)

Data provided by  National Institute of Standards and Technology

SRM 2973 Vitamin D Metabolites in Frozen Human Serum (High Level) - This Standard Reference Material (SRM) is intended for use as an accuracy control in the critical evaluation of methods for determining the amount-of-substance concentration of vitamin D metabolites in human serum. This SRM can also be used as a quality assurance tool for assigning values to in-house control materials for these constituents. This data is public in the Certificate of Analysis for this material.

Tags: Standard Reference Material,SRM,SRM 2973,Frozen Human Serum,certified values,reference values,Vitamin D Metabolites,25-hydroxyvitamin D3,25-hydroxyvitamin D2,3-epi-25-hydroxyvitamin D3,24R,25-dihydroxyvitamin D3,Biosciences and Health,

Modified: 2024-02-22

Views: 0