Found at 1 store we track
$98.96 per litre
Price per unit, converted to US dollars
At Lab Alley, United States
- Pack
- 500 millilitres for $49.48
- Grade
- Grade not stated · Solution 50% · packs of 50 millilitres to 1 litre
Found at 1 store we track
$98.96 per litre
Price per unit, converted to US dollars
At Lab Alley, United States
5 offers from 1 store · Prices checked October 28, 2026 · Prices run from $98.96 to $10.09 per litre, because a bigger pack costs less per litre.
Liquids switch to the matching volume: microlitre, millilitre, litre, fluid ounce or US gallon.
5 prices, cheapest first
| Store | Grade and pack | Price | Link |
|---|---|---|---|
| Lab AlleyUnited States | Grade not stated · Solution 50% · packs of 50 millilitres to 1 litre500 millilitres for $49.48 | $98.96 per litre | View at store |
| Lab AlleyUnited States | Grade not stated · Denatured solution 0.1% · packs of 50 millilitres to 1 litre50 millilitres for $49.48 | $990 per litre | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 50 grams to 1 kilogram100 grams for $394.15 | $3,941 per kilogram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 10 to 50 grams25 grams for $114.16 | $4.57 per gram | View at store |
| Lab AlleyUnited States | Reagent grade · packs of 2 to 10 grams5 grams for $50.47 | $10.09 per gram | View at store |
Pick the strength and how much you need. We work out the grams of Thymolphthalein and what they cost at the cheapest store we track.
Weigh it out, dissolve it in less water than you need, then top up to the full amount.
1 company makes or distributes it, as reported to the US Environmental Protection Agency in 2020.
Your company? List it free and get bulk buyer requests.
How we compare: each store's own price, turned into US dollars at European Central Bank rates of 2026-10-29, then divided by the pack size. Shipping and tax are not included.