Cheapest by volume
$15.94 per litre
Price per unit, converted to US dollars
At Lab Alley, United States
- Pack
- 16 litres for $254.97
- Grade
- Reagent grade · Solution 0.1% · packs of 1 to 25 litres
Methylene Blue suppliers and prices
- Formula
- C16H18ClN3S
- CAS number
- 61-73-4
- Molar mass
- 319.90 g/mol
Smallest amount to spend
$61.89 for 500 millilitres
Total for one pack, in the store's own currency
At Lab Alley, United States
- Works out at
- $124 per litre
- Grade
- Reagent grade · Solution 0.1% · packs of 50 millilitres to 1 litre
8 offers from 4 stores · Prices checked October 28, 2026 · Prices run from $15.94 to $5.31 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
8 prices, cheapest first
| Store | Grade and pack | Price | Link |
|---|---|---|---|
| Lab AlleyUnited States | Reagent grade · Solution 0.1% · packs of 1 to 25 litres16 litres for $254.97 | $15.94 per litre | View at store |
| Lab AlleyUnited States | Reagent grade · Solution 1% · packs of 1 to 25 litres16 litres for $290.64 | $18.16 per litre | View at store |
| Lab AlleyUnited States | Reagent grade · Solution 0.1% · packs of 50 millilitres to 1 litre500 millilitres for $61.89 | $124 per litre | View at store |
| Lab AlleyUnited States | Reagent grade · Solution 1% · packs of 50 millilitres to 1 litre500 millilitres for $62.85 | $126 per litre | View at store |
| Wards ScienceUnited States | Grade not stated · packs of 50 millilitres to 1 litre500 millilitres for $88.95 | $178 per litre | View at store |
| Boreal ScienceCanada | Grade not stated · packs of 50 millilitres to 1 litre500 millilitres for 140.50 CAD | $201 per litre | View at store |
| Lab DepotUnited States | Grade not stated · packs of 50 grams to 1 kilogram100 grams for $268.50 | $2,685 per kilogram | View at store |
| Lab DepotUnited States | Grade not stated · packs of 10 to 50 grams25 grams for $132.70 | $5.31 per gram | View at store |
Making a solution?
Pick the strength and how much you need. We work out the grams of Methylene Blue and what they cost at the cheapest store we track.
- You need
- 320 milligrams
- of Methylene Blue, molar mass 319.90 g/mol
- That much costs
- $0.86
- $8.59 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
- C16H18ClN3S
- Molar mass
- 319.90 g/mol
- CAS number
- 61-73-4
- InChIKey
- CXKWCBBOMKCUKX-UHFFFAOYSA-M
- Official record
- PubChem 6099
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.