USP & General Tests

The USP establishes primary standards for ensuring quality in pharmaceutical development & manufacturing. USP Reference Standards are rigorously tested and evaluated by multiple independent commercial, regulatory, and academic laboratories to confirm accuracy and reproducibility.

 USP Tests

Below are the most common general chapter tests we perform. We also perform many analyses by partial or full monographs in the official USP.

USP Chapter Test
<197> Spectrophotometric Identification Test
<201> Thin-Layer Chromatography Identification Test
<206> Aluminum
<211> Arsenic
<221> Chloride and Sulfate
<228> Ethylene Oxide and Dioxane
<241> Iron
<251> Lead
<281> Residue On Ignition
<291> Selenium
<301> Acid Neutralizing Capacity
<311> Algniates Assay
<401> Fats and Fixed Oils
  •   Acid Value, Sap Value, Hydroxyl value, Iodine value (method I & II), Unsap value, Fatty Acid Composition, Omega-3 Fatty Acids Determination and Profile, Peroxide value
<411> Folic Acid Assay
<467> Organic Volatile Impurities
<469> Ethylene Glycol, Diethylene Glycol, and Triethylene Glycol in Ethoxylated Substances
<471> Oxygen Flask Combustion
<525> Sulfur Dioxide
<541> Titrimetry
<616> Bulk Density And Tapped Density Of Powder
<621> Chromatography (GC, HPLC, and HPTLC)
<643> Total Organic Carbon
<645> Water Conductivity
<651> Congealing Temperature
<671> Moisture Permeation (Blister Packs)
<701> Disintegration
<711> Dissolution
<721> Distilling Range
<731> Loss On Drying
<733> Loss On Ignition
<741> Melting Range or Temperature
<781> Optical Rotation
<786> Particle Size Distribution Estimation by Analytical Sieving
<791> pH
<831> Refractive Index
<841> Specific Gravity
<851> Spectrophotometry and Light-Scattering
<905> Uniformity of Dosage Units
<911> Viscosity-Capillary Viscometer
<912> Viscosity-Rotational Rheometer Methods
<921> Water Determination
<2040> Disintegration and Dissolution of Dietary Supplements
<2091> Weight Variation of Dietary Supplements
 General Tests

We also perform other analyses, including:

Acetyl Cysteine in Finished Products
Alpha Lipoic Acid in Finished Products
Aqueous titrations
Average Molecular Weight
Benzocaine in Finished Products
Benzylalkonium Chloride (BAK in finished Products)
Capascin in Liniment
Carbohydrate Analysis
Cholesterol Analysis
Choline Bitartrate in Finished Products
Cleaning Validations (TOC, UV, HPLC, ICP-MS)
Coenzyme Co-Q10 in Finished Products
Congugated Linoleic Acid (CLA)
Cough Syrup (Dextromethorphan HBr and Phenylephrine HCl)
ECGC in Green Tea
Fatty Acid Analysis
Fatty Acid Composition, Omega-3 Fatty Acids Determination
Fluoride analysis (in tooth paste and dental gels)
Formaldehyde Analysis
Heavy Metals by ICP-MS
Hydroxy Propoxy Determination (GC-TCD)
Hydroxypropoxy Groups
K Value (viscosity)
Lecithin Assay
Levocarnitine (L-Carnitine) in Finished Products
Lidocaine in Creams and Ointments
Limit of Aldehydes (Copovidone and Povidone)
Limit of Sulur Dioxide
Non-aqueous titrations
Optical and Specific Rotation (wavelengths available: 365 nm, 405 nm, 436 nm, 546 nm, 589 nm, 633 nm)
Organic and Inorganic Arsenic
Polyphenols (identification or quantitatively)
Proanthocyanides Assay in Grape Seed
Protein Analysis (Dumas method)
Quaternium (Dowacil-200)
Quercetin in Finished Products
Salicylic Acid in Finished Products
Stability Studies at CRT and Accelerated Conditions
  • CRT = 25C, 60% RH Accelerated = 40C, 75% RH
Sterol Composition (GC)
Sunscreen Analysis in Finished Products
  • Octinoxate, Avobenzone, Octocrylene, Cxybenzone, Octisalate, Homosalate, Ensulizole
Titanium Dioxide (TiO2) Assay
Total Alkylbenzydimethylammonium Chlorides in Benzalkonium Chloride
Total Fats (Soxhlet)
Undecylenic Acid in Finished Products