Cheapest by volume
$37.99 per litre
Price per unit, converted to US dollars
At Lab Alley, United States
- Pack
- 4 litres for $151.98
- Grade
- Grade not stated · Solution 2% · packs of 1 to 25 litres
Fluorescein suppliers and prices
- Formula
- C20H12O5
- CAS number
- 2321-07-5
- Molar mass
- 332.30 g/mol
Smallest amount to spend
$51.84 for 500 millilitres
Total for one pack, in the store's own currency
At Lab Alley, United States
- Works out at
- $104 per litre
- Grade
- Grade not stated · Solution 2% · packs of 50 millilitres to 1 litre
5 offers from 2 stores · Prices checked October 28, 2026 · Prices run from $37.99 to $238 per litre, because a bigger pack costs less per litre.
Show prices per
Liquids switch to the matching volume: microlitre, millilitre, litre, fluid ounce or US gallon.
Every price we found
7 prices, cheapest first
| Store | Grade and pack | Price | Link |
|---|---|---|---|
| Lab AlleyUnited States | Grade not stated · Solution 2% · packs of 1 to 25 litres4 litres for $151.98 | $37.99 per litre | View at store |
| Lab AlleyUnited States | Reagent grade · Solution 1% · packs of 1 to 25 litres4 litres for $181.43 | $45.36 per litre | View at store |
| Lab AlleyUnited States | Analytical grade · Solution 1% · packs of 1 to 25 litres4 litres for $181.43 | $45.36 per litre | View at store |
| Lab AlleyUnited States | Grade not stated · Solution 2% · packs of 50 millilitres to 1 litre500 millilitres for $51.84 | $104 per litre | View at store |
| Lab AlleyUnited States | Reagent grade · Solution 1% · packs of 50 millilitres to 1 litre500 millilitres for $57.73 | $115 per litre | View at store |
| Lab AlleyUnited States | Analytical grade · Solution 1% · packs of 50 millilitres to 1 litre500 millilitres for $57.73 | $115 per litre | View at store |
| GFS ChemicalsUnited States | Grade not stated · packs of 50 grams to 1 kilogram500 grams for $118.78 | $238 per kilogram | View at store |
Making a solution?
Pick the strength and how much you need. We work out the grams of Fluorescein and what they cost at the cheapest store we track.
- You need
- 332 grams
- of Fluorescein, molar mass 332.30 g/mol
- That much costs
- $78.94
- $78.94 per litre of solution, at the lowest price per gram we found
Weigh it out, dissolve it in less water than you need, then top up to the full amount.
Similar chemicals
Sold by
Chemical identity
- Formula
- C20H12O5
- Molar mass
- 332.30 g/mol
- CAS number
- 2321-07-5
- InChIKey
- GNBHRKFJIUUOQI-UHFFFAOYSA-N
- Official record
- PubChem 16850
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.