Lab tools
Calculators for the bench and the purchase desk
Five small tools that answer the questions we hear most often before an order. They run in your browser, need no account and store nothing.
Molecular Weight Calculator
Type a formula and get the molar mass with an element-by-element mass breakdown. Brackets and hydrates are supported.
Open toolMolarity Calculator
Find how many grams to weigh for a target concentration and volume, corrected for the assay of your material.
Open toolDilution Calculator (C1V1 = C2V2)
Work out how much stock solution and diluent you need to reach a lower working concentration.
Open toolCAS Number Checker
Confirm that a CAS Registry Number is well formed and that its check digit is correct before you order.
Open toolLab Unit Converter
Switch between mass, volume, concentration (ppm, mg/L, % w/v) and temperature units in one place.
Open toolHave a list of compounds to price?
Paste up to 200 CAS numbers into Bulk CAS lookup, or send one enquiry for everything in your quote list. We reply with price, lead time and documents.