Certificate of Analysis
| Product: | Phosphotungstic Acid Solution (B) | |
| Code: | HK020 | |
| Lot: | 250958 | |
| Issue Number: | 1 | |
| Issue Date: | 02/10/2025 | |
| Expiry Date: | 2027/09 | |
| Date of Production: | 23/10/2025 | |
| Storage: | Store in a cool, dry, well-ventilated place. | |
| HK020 is an aqueous solution of phosphotungstic acid. It is a component in the Trichrome (Masson) Stain Pack HS773-AB or HS773-LG for differentiating collagen from muscle tissue in frozen and paraffin tissue samples with a counterstain of aniline blue or light green (Masson). | ||
| This product has been checked against the current TCS specification for the following test(s): | ||
| Result | ||
| Visual QC check | SOP Manual 6 | Conforms |
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For professional use only. |
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TCS Biosciences Ltd 
