Buffers and Standards
Hydrogen ion buffers comprising a mixture of a weak acid and its conjugate base or vice-versa and used to stabilize pH; also diluents, washing solutions, and standard-value solutions used for a broad array of scientific calibration purposes.
The buffers used to calibrate pH meters may be certified and/or traceable to the National Institute of Standards and Technology (NIST). These buffers may also be color-coded for easy identification:
- Red: pH 4.0
- Yellow: pH 7.0
- Blue: pH 10.0
PIPES, disodium salt, 99%
CAS: 76836-02-7 Molecular Formula: C8H16N2Na2O6S2 Molecular Weight (g/mol): 346.324 InChI Key: GMHSTJRPSVFLMT-UHFFFAOYSA-L Synonym: 1, 4-Piperazinediethanesulfonic acid disodium salt PubChem CID: 173553 ChEBI: CHEBI:63055 IUPAC Name: disodium;2-[4-(2-sulfonatoethyl)piperazin-1-yl]ethanesulfonate SMILES: C1CN(CCN1CCS(=O)(=O)[O-])CCS(=O)(=O)[O-].[Na+].[Na+]
TraceCERT™ F.A.M.E. Mix C8 - C24, Certified Reference Material, MilliporeSigma™ Supelco™
This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.
4-Nitroaniline, ≥98% (GC), MilliporeSigma™ Supelco™
4-Nitroaniline is an aromatic amine, used as an intermediate in the production of p-phenylenediamine, azo dyes, antioxidants, fuel additives, corrosion inhibitors and pesticides.
PESTANAL™ α-Chlordane, MilliporeSigma™ Supelco™
α-Chlordane is an organochlorine pesticide, widely used in agriculture to control pests. These chemicals are carcinogenic and known to induce toxicity in several organisms.
PESTANAL™ 2,4,5-Trichlorophenol, MilliporeSigma™ Supelco™
2,4,5-Trichlorophenol is a phenolic organochloride, which is persistent as an environmental contaminant.
Boron trichloride, 1M solution in methylene chloride, AcroSeal™
CAS: 10294-34-5 | BCl3 | 117.16 g/mol
CERILLIANT™ 6-Acetylmorphine-d6 Solution, 100 μg/mL in acetonitrile, Sold by MilliporeSigma™ Supelco™
Suitable for quantitation of 6-acetylmorphine (6-MAM) levels in GC/MS or LC/MS testing for clinical toxicology, forensic analysis, urine drug testing, pain prescription monitoring and isotope dilution methods.
CERILLIANT™ Catecholamine Metabolites Mix Solution, 1 mg/mL each component in methanol, Sold by MilliporeSigma™ Supelco™
A Certified Spiking Solution™ of major catecholamine metabolites 5-Hydroxyindole-3-acetic acid (5-HIAA), Homovanillic acid (HVA), and (±)-Vanilmandelic acid (VMA).
CERILLIANT™ Bupropion Hydrochloride Solution, 1.0 mg/mL in methanol (as free base), Sold by MilliporeSigma™ Supelco™
A certified solution standard suitable for use as starting material in calibrators or controls for a variety of LC/MS or GC/MS applications from forensic analysis and clinical toxicology to urine drug testing and pharmaceutical research.
CERILLIANT™ Caffeine Solution, 1.0 mg/mL in methanol, Sold by MilliporeSigma™ Supelco™
A Snap-N-Spike™ Reference Solution suitable for use in LC/MS or GC/MS applications from clinical toxicology to dietary supplement testing.
CERILLIANT™ Morphine-3-β-D-glucuronide Solution, 1 mg/mL in methanol with 0.05% NaOH, Sold by MilliporeSigma™ Supelco™
A certified solution standard of Morphine-3-β-D-glucuronide at a concentration of 1.0 mg/mL for high volumes of sample testing. This certified solution standard is suitable for LCMS or GCMS applications including forensic analysis or urine drug testing.
CERILLIANT™ Codeine-D3 Solution, 100 μg/mL in methanol, Sold by MilliporeSigma™ Supelco™
Codeine-D3 is a stable-labeled internal standard suitable for many LC/MS or GC/MS testing applications including pain prescription monitoring, forensic analysis, clinical toxicology, urine drug testing or isotope dilution methods.
CERILLIANT™ Multicomponent Alcohol Mix 1000, 1000 μg/mL each component in H2O, Sold by MilliporeSigma™ Supelco™
A multicomponent calibration kit containing acetone, ethanol, isopropanol, and methanol at a concentration of 1000 μg/mL. This kit is suitable for calibration of blood alcohol testing methods using GC Headspace.