| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| stevie | "intersting, a couple options here: https://www.amazon.com/Newdy-Aquarium-Hydroponics-0-00-14-00-Measurement/dp/B07217NV2Q/ref=sr_1_11?ie=UTF8&..." | Read more » | almost 7 years ago | |||
| stevie | "Looking into some test strips as well. Here's a couple options: $11 - https://www.grainger.com/product/3UDD2?cm_mmc=PPC:+Google+PLA&s_kwcid=AL..." | Read more » | almost 7 years ago | |||
| Ag8n | "I was on Amazon and found a bunch of pH meters under $20. Supposedly good from 0-14 pH, but that is very unlikely. Still, for the cost, it would ..." | Read more » | almost 7 years ago | |||
| Bronwen | "Ooh, just spotted this paper about a DIY open source pH monitor. Let's reach out / look in to this! http://journals.plos.org/plosone/article?id=10..." | Read more » | almost 7 years ago | |||
| Bronwen | "I'm a little familiar with PH testing for aquariums (usually strips or vials) and soil for planting (vials or sensors). What's nice is that these t..." | Read more » | almost 7 years ago | |||
| Ag8n | "In this area (Ohio), at least, trace levels of hypochlorite ( bleach) work their way into the storm sewer. If you have a piece of red pH paper, b..." | Read more » | almost 7 years ago | |||
| warren | "Thanks, especially for the tips on oxidation! What can cause that, and how might it be avoided? " | Read more » | almost 7 years ago | |||
| Ag8n | "You want to check the expiration date of the strips, first. If they are expired, throw them out. And beware. If you are using something like red ..." | Read more » | almost 7 years ago | |||
| WaterGeek | "Great work and super useful for citizen's looking to track the quality and state of open water. We've been looking into something like this for dri..." | Read more » | almost 7 years ago | |||
| WaterGeek | "Nice work. That Arduino sketch (.ino) available? " | Read more » | almost 7 years ago | |||
| JSummers | "Hi, I do not think a peristaltic pump would work very well since it is not designed to have very precise volume control. I have a new syringe pump ..." | Read more » | almost 7 years ago | |||
| warren | "Hello! It looks like this is in response to: https://publiclab.org/notes/JSummers/12-02-2014/titraumatic-automated-titration-apparatus @jsummers -..." | Read more » | almost 7 years ago | |||
| MadTinker | "I would add the following: alkalinity, hardness, and perhaps ORP " | Read more » | about 7 years ago | |||
| incaking | "/* Ph And Temperature Sensing Sample Code * ph meter sensor data reading * real time temperature monitoring Hardware List * 18B20 temperature s..." | Read more » | about 7 years ago | |||
| shanlter | "@shanlter awards a barnstar to incaking for their awesome contribution! " | Read more » | about 7 years ago | |||
| shanlter | "thanks! @incaking!!! 非常详细的说明文档~！ 你可以把arduino的程序链接也上传一下吗？ " | Read more » | about 7 years ago | |||
| warren | "Hi, this looks awesome! Do you have a link to the Arduino sketch (.ino) file you've used? " | Read more » | about 7 years ago | |||
| liz | "one more: https://publiclab.org/questions/liz/09-22-2017/what-are-examples-of-citizen-science-projects-that-have-tested-water-for-ph " | Read more » | over 7 years ago | |||
| liz | "Also this one: https://publiclab.org/notes/liz/09-22-2017/when-is-litmus-paper-not-good-enough-for-measuring-ph " | Read more » | over 7 years ago | |||
| liz | "Very cool! I just asked this question: https://publiclab.org/questions/liz/09-22-2017/how-has-ph-testing-evolved-over-time " | Read more » | over 7 years ago |