Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
Does anyone has an 342 TDS NaCl reference solution for calibrating a TDS meter. I want to adjust my DM-1, its reading a bit low. I haven't found any locally, and I would rather not wait until the Group Buy is in.