Ethanol in Water Solution - Ethanol concentration from 0.193 to 5.146 g/L
Ethanol in Water Solutions (Reference Material) for the control and verification of the production of breathalyzers. They cover a range of concentrations from 0.1930 g/L to 5.146 g/L with expanded uncertainties from 0.0026 g/L to 0.041 g/L..
NB: for orders over 30 L, please ask for a quotation.
Detailed description
Reference Ethanol in Water Solutions (RM)
Our reference solutions, reference materials (RMs), are produced by gravimetric method by mixing a mass of ethanol in purified water. The gravimetric concentration of the reference material is validated by comparison to a reference solution.
They are delivered with a calibration certificate stating the concentration and associated uncertainty of the RM.
Use of Ethanol in Water Solutions (RM)
These Ethanol in Water solutions can be used for the production control of breathalyzers.
Characteristics of Ethanol in Water Solutions (RM)
Find all the technical characteristics of our certified solutions, uncertainties, packaging and storage instructions in the detailed technical sheet.
Manufacturing
All our reference Ethanol in Water solutions are produced on demand with a concentration expressed in grams of alcohol per litre of water. They are dispatched within 3 weeks of receipt of order.
How to convert an alcohol concentration per litre of air into an alcohol concentration per litre of water
Let γ(t) be the mass concentration of ethanol of an aqueous solution of ethanol. When air is bubbled through such a solution, the mass concentration β(t) of ethanol in the produced test gas is given by the following formula:
𝛽(𝑡) = 0.04145 × 10−3 × 𝛾(𝑡) × 𝑒(0.06583∗ 𝑡) (Dubowski’s formula)
with:
- β(t) mass concentration of ethanol in the test gas at a given temperature t in mg/L
- 0.04145 × 10-3 and 0.06583 conventional Dubowski coefficients
- γ(t) mass concentration of ethanol in the aqueous solution at a given temperature in mg/L
- t temperature of solution and test gas in °C
For t = 34 °C the equation can be simplified to:
- β(34) = 0.38866 × 10-3 ×γ(34)
Example: if you want an ethanol concentration in the air equal to 0.400 mg/L, Dubowski's formula gives an ethanol concentration in the water equal to 1.0292 g/L (for t= 34 °C).
All the constituents introduced into our reference Ethanol in Water solutions are determined using measurement methods traceable to the International System of Units (SI).
Delivery
Delivery in mainland France via the shop up to 30 L of solution ordered, beyond that and for other destinations: on quotation.
>> Ask for a quote for delivery outside mainland France or for large volume orders.
