![8690b66f95bcd328b37cea94d0f41b40.jpg](/proxy.php?image=http%3A%2F%2Fimages.tapatalk-cdn.com%2F15%2F07%2F15%2F8690b66f95bcd328b37cea94d0f41b40.jpg&hash=bfef0ad45be89b9f8aff5f1fafcf7c69)
Here's a photo of my system. I purchased it used. Just looking for some direction. It's reading .4ppm currently. I'm letting it run for a few but what should I do or any one know where I can find a manual for this thing? I have no idea of the brand.
Picture for fun. Thanks for the help.