Quality Control and Proficiency Samples
ERA WATERS CORP HETEROTROPHIC PLATE COUNT
Each sample is one lyophilized standard containing a Heterotrophic bacteria present in the range 5-500 CFU/mL or MPN/mL. Use with the Standard Methods 9215B - Pour Plate Method, and Most Probable Number (MPN) Method (simplate).
ERA WATERS CORP TRACE METALS QC SAMPLE
One 15 mL screw-cap vial yields up to 1 liter after dilution. Use with AA, ICP-OES or ICP-MS and selected colorimetric methods.
ERA WATERS CORP STANDARD PLATE COUNT QC
Each sample is one lyophilized standard containing a Heterotrophic bacteria present in the range 5-500 CFU/mL or MPN/mL. Use with the Standard Methods 9215B - Pour Plate Method, and Most Probable Number (MPN) Method (simplate).
Avanti Polar Lipids 7α-Hydroxycholesterol, Powder, 10 mg
7α-Hydroxycholesterol (cholest-5-en-3β,7α-diol) is a highly pure lipid used in scientific research to explore its various biological roles, including its function in bile acid synthesis and its contribution to immune responses. This compound is provided as a stable powder and is suitable for a range of applications in the study of lipid standards.
- High purity lipid with over 99% purity
- Physical state: Powder
- Molecular formula: C27H46O2
- Storage temperature: -20°C
- Stability: 1 year
- Non-hygroscopic and non-light sensitive
- Packaged as 1 x 10 mg
- Shipped in dry ice
Inorganic Ventures 200.7WW QC STANDARD 2 125mL
Inorganic Ventures' Quality Control Standard 2 is a 125mL certified reference material set in a nitric acid / hydrofluoric acid matrix for stability. This standard is Traceable to NIST and manufactured in accordance with our stringent Quality Assurance guidelines. See Certificate of Analysis for expiration.
ATTENTION: Inorganic Ventures is no longer supplying paper copies of Certificate of Analyses(CoA) and Safety Data Sheets (SDS). Please use this link to download your copies: https://www.inorganicventures.com/coa-sds-search
Verichem Laboratories Reference Kit Matrix Plus™ Chemistry 1 X 15 mL
Protein based, ready-to-use liquid. No glycols, azides or surfactants. Known concentrations verified against available NIST standard reference material. Glucose, Urea Nitrogen, Creatinine, Calcium, Phosphorus, Magnesium, Triglyceride Analytes
ERA WATERS CORP CHLORIDE STD 1000MG/L 500ML
Chloride - 1000 mg/l, 500 ml One 500 mL standard containing Chloride at 1000 mg/L in H2O. This CRM is covered by ERA's ISO Guide 34 accreditation.
Electron Microscopy Sciences Quality Control Testing Standard Set A
For Scanning Electron Microscopes with Energy Dispersive or Wavelength Dispersive X-ray systems to check the performance and ensure performance is within the manufactures specification.
Cobalt, compulsory for checking Energy Dispersive analyzers, and any other five selected standards*
Duplex Brass for checking the contrast efficiency of Back Scattered detectors and detecting two major copper/zinc phases of 0.1 atomic number difference.
A Faraday Cage for measuring the beam current at the specimen plane is in the center.
S168T gold crystals on a carbon background for checking the performance of the SEM at high-resolution with a finer than a 10 micron probe.
S1930 silicon test specimen with squares of periodicity 9.9 micrometers lines about 1.9 micrometers is used for magnification calibration and assessing image distribution.
*Excludes SRM 481, SRM 482 and SRM 1872 On 25mm diameter block.
Ricca Chemical Company VeriSpec™ QC Standard 21, Ricca Chemical
CAS: 7697-37-2 Molecular Formula: HNO3 Molecular Weight (g/mol): 63.01 MDL Number: MFCD00011349 InChI Key: GRYLNZFGIOXLOG-UHFFFAOYSA-N PubChem CID: 944 ChEBI: CHEBI:48107 IUPAC Name: nitric acid SMILES: O[N+]([O-])=O