Buffers and Standards
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
Conductivity Standards for METTLER TOLEDO Conductivity Probes, METTLER TOLEDO™
Recommended NIST traceable solutions for calibrating or verifying METTLER TOLEDO conductivity electrodes.
Promotions are available
Potassium bromate/Potassium bromide, 0.1N Standardized Solution, Thermo Scientific Chemicals
Molecular Formula: KBrO3/KBr MDL Number: MFCD00011359
Promotions are available
Copper, AAS standard solution, Specpure™ Cu 1000μg/mL, Thermo Scientific Chemicals
CAS: 7440-50-8 Molecular Formula: Cu Molecular Weight (g/mol): 63.55 MDL Number: MFCD00010965 InChI Key: RYGMFSIKBFXOCR-UHFFFAOYSA-N PubChem CID: 23978 ChEBI: CHEBI:30052 IUPAC Name: copper SMILES: [Cu]
Promotions are available
Sodium, AAS standard solution, Specpure™ Na 1000μg/mL, Thermo Scientific Chemicals
MDL Number: MFCD00085307
Promotions are available
Conductivity Standard, NIST Traceable, 84μS/cm, Reagecon™
Accredited to ISO 17025. Reagecon™ Conductivity Standard, NIST Traceable, 84μS/cm is an aqueous-based, non-hazardous low-level conductivity standard with a high degree of accuracy, low temperature variation and guaranteed stability through expiration, even after opening the bottle.
General Purpose Viscosity Standards, Paragon Scientific™
Certified in strict accordance with ASTM D2162, the primary method for viscosity standards manufacture. Dual certified to the International Standards BS EN ISO / IEC 17025 and ISO 17034 under our UKAS accrediatation.
Conductivity Standard, NIST Traceable, 1,413μS/cm, Reagecon™
Accredited to ISO 17025. Reagecon™ Conductivity Standard, NIST Traceable, 1,413μS/cm is an aqueous-based, non-hazardous standard with a high degree of accuracy, low temperature variation and guaranteed stability through the expiration date, even after opening the bottle.
