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Student Reference Standards and Reagent Chemicals | ||
Educators agree that students need "measuring sticks" to calibrate their equipment and volumetric standards. U.S. Bureau of Standards reference standards are excellent but very expensive. Some commercial "standards" are satisfactory, but others are not. To give students reference standards of accuracy matching that of unknowns, Thorn Smith produces Student Reference Standards. Side-by-side analysis of these standards with Thorn Smith unknowns gives agreement of a few parts per ten thousand for many materials. Matching these accuracies provides a real challenge to even your best students.
| Catalog Number | Material
MSDS INFO |
Unit Price | ||||
|---|---|---|---|---|---|---|
| Qty | 100 gram | Qty | 500 gram | Ext. | ||
| Acid potassium phthalate (see Potassium biphthalate) | ||||||
| 81-1010 | Arsenious acid - for standardizing iodine
Highly toxic; shipped in Poison Packs* |
$ 11.70 | $ 46.50 | |||
| 81-1020 | Calcium carbonate - for standardizing EDTA solution | $ 11.50 | $ 44.75 | |||
| 81-1035 | Ferrous ammonium sulfate - for standardizing dichromate or permanganate solution | $ 11.75 | $ 45.95 | |||
| 81-1045 | Potassium biphthalate - for standardizing sodium hydroxide solution | $ 15.00 | $ 55.00 | |||
| 81-1055 | Potassium dichromate - for standardizing thiosulfate solution Shipped in Poison Packs* | $ 10.70 | $ 41.50 | |||
| 81-1060 | Silver nitrate ACS grade
Shipped in Poison Packs* Note: Prices may vary due to silver market and may vary due to change in poison packaging charges. Phone for quotations on amounts over 500 grams. |
$ 89.25 | $382.50 | |||
| 81-1075 | Sodium carbonate - for standardizing acid solution | $ 9.95 | $ 38.50 | |||
| 81-1085 | Sodium chloride - for standardizing silver nitrate solution | $ 9.45 | $ 36.50 | |||
| 81-1090 | Sodium oxalate - for standardizing permanganate solution | $ 11.70 | $ 46.50 | |||
| *Shipped in Poison Packs at extra charge. | Sub-Total $
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| Table of Contents | Ordering and Pricing Information |
| Thorn Smith Laboratories | 7755 Narrow Gauge Road | Beulah, MI 49617
Call: 231-882-4672, 231-882-7251, or Fax: 231-882-4804 Email: Auric@ThornSmithLabs.com |
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