digital

Okay so Hanna's Digital Salinity Meter requires calibration right? Could Hanna produce a Checker that did not require the purchase of calibration solutions? For example if a Salt Mix Pack says "Mix 1g of salt to 1 liter of water for 35ppt" Bearing in mind Hanna Calibration solution is 35ppt, you...

I got an e-mail the other day that Hanna has a marine salinity tester (Hanna web page, YouTube Video) Has anyone seen any reviews or have any experience with this? It's $69 on the Hanna web site, so the price is very reasonable. I'm tempted to get one just to see...

So after watching the video and finding that my local store had some in stock, I decided to pull the plug and grab one. I have an issue with the reading I am getting. I have three different refractometers that I have collected over the years. All three have been calibrated using standard...