3392 个结果符合：“Certified Reference Materials, Rocklabs”

Supplier: VWR Chemicals

A cationic azine dye slightly soluble in water and ethanol. Used as a weak nuclear stain and as a supravital stain of fresh peripheal blood.

Supplier: TCI

Nickel Content 22 mass ppm and Vanadium Content 53 mass ppm

Supplier: VWR Chemicals

Ready to use colour solutions according to Reag. Ph. Eur.

Supplier: Thermo Fisher Scientific

Create labels that identify the chemical and its properties. Refer to the appropriate Material Safety Data Sheet (MSDS) or other reference material to verify the correct codes. Overlay is provided to protect the label from chemicals. Consists of pressure-sensitive stickers and blank labels. Complete instructions included with each package.

Supplier: MERCK MILLIPORE

Tris(hydroxymethyl)aminomethane volumetric standard, secondary reference material for acidimetry, traceable to NIST Standard Reference Material (SRM)

Supplier: TCI

Sulfur Content 0.5 mass% level

Supplier: SUPELCO

Organic Standard, Monobasic Potassium Phosphate

Supplier: VWR Chemicals

For spectrophotometer calibration according to European Pharmacopoeia (Ph. Eur.)

Supplier: VWR Chemicals

COC flash point standards are tested and certified in accordance with ASTM D92 'Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester.'

Supplier: VWR Chemicals

Linearity standards packed in permanently sealed UV cuvettes or 100 ml amber bottles.

Supplier: VWR Chemicals

Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis.

Supplier: Thermo Fisher Scientific

孔雀绿, pure, certified

Supplier: VWR Chemicals

Bluish-green dye that is soluble in alcohol. Can be used with safranin as a stain for plant tissue and for demonstrating nuclear histones.

Supplier: VWR Chemicals

Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis.

Supplier: VWR Chemicals

This range of relative density standards are certified in accordance with primary level ASTM D1480 methodology, and are dual-certified to ISO 17025 / ISO 17034 under UKAS accreditation. Relative Density standards are designed for the calibration or verification of instruments used to measure density and relative density of materials at the desired test temperature within the range of 15 to 25 °C.

Supplier: CYTIVA WHATMAN

SPARTAN syringe filters with regenerated cellulose (RC) membrane provide reproducible filtration of organic and aqueous solutions for high performance and ultra-high performance liquid chromatography (HPLC and UHPLC) sample preparation.

Supplier: VWR Chemicals

A set for linearity check of the absorbance of spectrophotometers.

Supplier: Amarell

These precision thermometers, with enclosed scale, are suitable for government testing and/or official calibration.

Supplier: Thermo Fisher Scientific

伊红 Y, pure, certified

Supplier: VWR Chemicals

These solutions are developed and produced according to chapter 2.2.2. 'Degree of colouration of liquids' of the European Pharmacopoeia. (brown, brown-yellow, green-yellow, red and yellow). These kits are ready to use, and are dedicated to help you save time and money because preparation of these solutions is very complex.

Supplier: VWR Chemicals

Stray light standards packed in permanently sealed UV cuvettes or 100 ml amber bottle.

Supplier: CYTIVA PALL

Optimised to provide the most consistent results when analysing ionic species. Certified for low level extractables detected by conductivity.

Supplier: Avantor

DILUT-IT dissolution media concentrates are produced from raw materials in accordance with USP/EP/BP/JP guidelines under validated processes in Avantor Performance Materials' ISO certified manufacturing facilities

Supplier: BURKLE

Pure aluminium (material AL 99,5). This aluminium bottle is particularly suitable for storing, transport, or sending substances and reference samples which have to be stored completely unaltered.

Supplier: MACRON AVANTOR BRAND

For refilling calomel reference electrodes.

Supplier: Thermo Fisher Scientific

亚甲蓝三水合物, pure, certified residual water

Supplier: VWR Chemicals

Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis and are designed to measure the visual colour of water supplies.

Supplier: TCI

Sulfur Content 0 mass% level

Supplier: VWR Chemicals

Wright's stain, certified for microscopical staining

Supplier: Avantor

DILUT-IT dissolution media concentrates are produced from raw materials in accordance with USP/EP/BP/JP guidelines under validated processes in Avantor Performance Materials' ISO certified manufacturing facilities