This is a replacement cap for theĀ Vernier Optical DO Probe. The cap will need to be replaced every few years. Each cap is supplied with a unique calibration code on a microSD card.
Due to recent changes in U.S. trade policy, new tariffs are being implemented that impact our products. This means a surcharge of 10% will be applied to orders received starting May 12th, with the exception of software and books. Learn more.