Matrix Blanks and Standardization Solutions
Aqua Solutions Hexavalent Chromium 4.0 ppm Solution (500ML)
Hexavalent Chromium 4.0 ppm Solution (500ML)
Aqua Solutions 50PPM AMMONIA STD-250ML-3MOS
250ml bottle of ammonia standard, 50ppm as NH3. Product has three month shelf life.
Teledyne Tekmar 2000PPM STD
This item has a minimum qty of 2 per supplier requirements.
2000PPM STD. This product can only ship within the continental USA.
Hach Company Nickel Standard Solution, 1000 mg/L as Ni (NIST), 100 mL
For accuracy checks in nickel determinations. (HNO3 matrix)
Electron Microscopy Sciences Glutaraldehyde Aqueous 8%, EM Grade 100 ML
OCHCH₂CH₂CH₂CHO F.W. 100.12
Aqueous glutaraldehyde, the universal fixative for electron microscopy, is purified to EM grade from commercial grade by "all-glass vacuum-distillation". It is the highest possible quality, free from polymers and other contaminents. Each lot is assayed prior to shipping assuring consistent purity and the highest possible quality.
If stored properly, our Glutaraldehyde has a very long shelf life. EM grade aqueous glutaraldehyde, stored in volumes greater than 100 ml, with repeated defrosting and recapping, will polymerize in time, producing an absorption peak of 235nm rather than the 280nm of pure EM grade. The presence of polymerized glutaraldehyde greatly reduces its efficiency as a cross-linking agent, preventing proper fixation. For this reason, we provide 10 ml ampoules sealed under dry nitrogen and 100 ml bottles that are kept refrigerated until it is shipped.
Grade: EM Grade
Medchemexpress LLC 4-amino-N-(5-methyl-1,3,4-thiadiazol-2-yl)benzenesulfonamide | 144-82-1 | MFCD00053363 | 99.8% | 270.33 | C9H10N4O2S2 | 10 MG
Sulfamethizole (Standard) is an analytical reference standard of the sulfonamide antibiotic sulfamethizole, supplied for research and analytical applications. It is intended for use in qualitative and quantitative assays, method development, and instrument calibration with techniques such as HPLC, GC, and MS. For research use only; not for human or veterinary use.
- High purity: 99.79%
- Useful as a reference standard for HPLC, GC, and MS
- Suitable for qualitative and quantitative assays
- Compact 10 mg package for analytical workflows
- Solid, white to off-white appearance for easy handling
Aqua Solutions Trifluoroacetic Acid 1,000 ppm (mg/L) | 76-05-1 | MFCD00004169
Trifluoroacetic Acid 1,000 ppm (mg/L) | MW: 114.022 | 76-05-1 | MFCD00004169