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Brands and Grades
Description of Sigma Product Grades
Table Comparing Sigma and Competitor Product Grades
Links to Product Selection Guides on our Website
We will often have large number of different products available for particular chemical. These can be different brands e.g. made by Sigma, Aldrich or FLUKA, or different grades, suitable or perhaps specifically tested for differerent applications.
Please see the table below indicating the different grades that may be available and their intended area of use, along with the suggested equivalent VWR or Fisher grade.
| Commonly Known as | Sigma-Aldrich Grade | VWR Grade | Fisher Grade |
| Technical | Techn | Technical | Technical |
| General Purpose Reagent | Purum > 95.0% | GPR | SLR/Certified |
| Puriss > 98.5% | |||
| Analytical Reagent | Purum p.a. | Analar | AR |
| Puriss p.a. | |||
| Puriss p.a. plus | |||
| Chemistry Applications | ACS | ||
| SigmaUltra | |||
| ReagentPlus | |||
| Anhydrous | |||
| Life Science Applications | BioChemika* | Molecular Biology | Biotechnology |
| * for Molecular Biology (MB) | |||
| * for Microbiology | |||
| * for Microscopy | |||
| * for Electrophoresis | |||
| * for Fluorescence | |||
| Cell Culture Grade* | |||
| * tested for compatibility with growth of cells in culture | |||
| Biotech* | |||
| * for Peptide synthesis | |||
| * for oligonucleotide synthesis | |||
| * for Protein sequencing | |||
| * for Electrophoresis | |||
| Biochemika Ultra | |||
| Biochemika Ultra for MB* | |||
| * tested for DNAse, RNAse, | |||
| Protease and Phosphatase | |||
| Pharmaceutical Applications | BP (British Pharmacopoeia) | ||
| USP (US Pharmacopoeia) | |||
| Ph.Eur (European Pharmacopoeia) | |||
| * for clinical research | |||
| Chromatography Reagents | CHROMOSOLV | HiPersolv | HPLC |
| * for HPLC | GC | ||
| * for GC | |||
| Spectrometry Reagents | SPECTRANAL | Spectrosol | Spectranalysed |
| AAS Spectroscopy | |||
| * for UV | |||
| * for IR | |||
| Traces Analysis Reagents | TraceSelect (below 0.5 ppb) | Aristar | Primar |
| TraceSelect Ultra (below 1 ppt) | |||
| Volumetric Solutions | Fixanal | Convol | Nomafona |
| Residue Analysis Reagents | PESTANAL | For Residue Analysis | Distol |
| OEKANAL | |||
| Karl Fisher Reagents | HYDRANAL | ||
| Specials | Chiraselect: Reagents for derivatisation of Chiral Molecules | ||
| Selectophore: Special ion-selective Molecules & aids for Electrode Production | |||
| Certified Reference Materials: For use as Primary or Secondary Reference Standards |
Links to Product Selection Guides Shown on Our Website
Please find below links to other parts of the Sigma-Aldrich website which give advice on choosing the grade of product appropriate for different applications.
Solvent Application Portal: This is a set of tables recommending the grade of solvent appropriate for use in analytical, chemistry, environmental and biochemical applications
Descriptions of the grades relevant to solvents, available from Sigma-aldrich are shown in this link.
Adsorbent selection guide
Agarose selection guide
Albumin selection guide
Antibiotic selection guide
Buffer reference centre
Cell lysis reference and selection guide
Detergent selection guide
GC column selection guide
His Select reference and selection guide
Life science product guides
Protease inhibitor cocktail selection guide
Syringe selection guide
Vial closure and septa selection guide