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
Tris(2-carboxyethyl)phosphine hydrochloride Solution 0.5M, MilliporeSigma™ Supelco™
It belongs to the trialkylphosphine class.
(±)-Geosmin and 2-Methylisoborneol Solution, Certified Reference Material, MilliporeSigma™ Supelco™
100 μg/mL Each Component in Methanol
Paclitaxel Pharmaceutical Secondary Standard, MilliporeSigma™ Supelco™
Pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards
Amikacin Sulfate Pharmaceutical Secondary Standard, MilliporeSigma™ Supelco™
Pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards
Ramipril Pharmaceutical Secondary Standard, MilliporeSigma™ Supelco™
Ramipril is an angiotensin-converting-enzyme (ACE) inhibitor, which acts on the renin angiotensin aldosterone system. It is widely used in reducing hypertension by the suppression of the effects of angiotensin II at its receptor, thereby blocking the renin-angiotensin system.
Pentadecanoic acid, ≥99.0% (GC), MilliporeSigma™ Supelco™
Pentadecanoic acid is a saturated fatty acid, commonly present in ox bile. It is present as a phytochemical component of Indigofera suffruticosa leaves and is known to exhibit antimicrobial and antioxidant properties.
VETRANAL™ Lanoconazole, MilliporeSigma™ Supelco™
Lanoconazole is a member of the imidazole family and an antifungal agent, which finds applications as an antidermatophytic drug.
Oenothein B, ≥80% (HPLC), MilliporeSigma™ Supelco™
Oenothein B is a dimeric ellagitannin compound which is found commonly in genusOenothera.
Calcium ion Solution, For ISE 0.1 M Ca (for ion-selective electrodes), MilliporeSigma™ Supelco™
Calcium ion solution (CaCl2) contains dissolved calcium ions and chloride ions.