ROTRONIC Non-Saturated salt calibration standards are an accurate and dependable means of checking the calibration of any %rh measurement device.  In combination with our wide range of calibration devices, they provide a known %rh value and are supplied as standard with a certificate of calibration, either SCS (Swiss calibration Service) or UKAS (United Kingdom Accreditation Service).

They are all supplied in packs of five single use glass ampoules, packed in a polystyrene box.

Ordering information:

EAxx-SCS  Where xx = 20, 35, 50, 65, 75, 80 or 95 %rh, SCS certified  - £19.00

EAyy-SCS  Where yy = 0, 5, 10 or 11%rh, SCS certified -

£23.00

EA35-UKAS certified calibration standards, 35 %rh, includes

certificate - £49.00 

EA50-UKAS certified calibration standards, 50 %rh, includes certificate - £49.00

EA80-UKAS certified calibration standards, 80 %rh, includes certificate - £49.00

UKAS versions are more expensive because of the different method of certification and the smaller production batches.

More information on the ROTRONIC calibration system can be found on the product pages.

The article below was presented at the International Humidity Symposium in 2002 and describes the theory and evolution of the system.

ROTRONIC CAL STDS