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# Water Sensors water-sensors

Author Comment Last activity Moderation
belkinsa " Thank you @MadTinker, I updated the page with that info, hopefully it's right. " | Read more » over 3 years ago
MadTinker " @belkinsa I’d strongly suggest the Winkler test for monitoring DO. It’s easy, can be done reliably by 14+ yr old kids. Works on lakes, rivers, etc..." | Read more » over 3 years ago
belkinsa "Sorry for the delay. I was thinking that the data could be used for monitoring rather than education because that data could be used as a red flag...." | Read more » over 3 years ago
stevie "Hi @Belkinsa ! What are you hoping to use the data for? We recently worked with one of the LaMotte kits to talk about different water quality param..." | Read more » almost 4 years ago
MadTinker " do not use DO sensor On a monthly period, at a number of sampling locations in the watershed, air/water temperature are collected and: DO, Ha..." | Read more » almost 4 years ago
joyofsoy "These answers came from Twitter user @Sulfur_Blue on a tweet I shared through the Public Lab Twitter account: Consider overall costs / maintenance..." | Read more » almost 4 years ago
Ag8n "My background is mostly industrial- specifically pharmaceutical. So much of the testing was guided by something like The USP. The instruments were..." | Read more » almost 4 years ago
warren "If it's helpful, this page helps with the context of "prototyping kits" to ensure people know things are "in the testing phase" -- https://publicla..." | Read more » over 4 years ago
warren "@Ag8n found you can look on Amazon for aquarium sensors! https://publiclab.org/questions/Ag8n/02-12-2018/substitution-for-conductivity-meter Inclu..." | Read more » over 4 years ago
warren "I love this idea. Here are some leads on connecting a TDS meter to an Arduino, if that's what you're interested in: https://forum.arduino.cc/index..." | Read more » over 4 years ago
warren "wow!!! This is very cool. Here's an amazon link: https://www.amazon.com/s/?tag=duc0c-20&url=search-alias%3Daps&field-keywords=tds%20aquarium " | Read more » over 4 years ago
Ag8n "I checked Amazon. There are several tds meters that also do conductivity for a price of under $20. Since a scientific model lists for about$1000,..." | Read more » over 4 years ago
Ag8n "Sorry. Truncated the internet address: Https://www.hydroponics.net/learn/debate_over_ec_and_tds.php " | Read more » over 4 years ago
Ag8n "Check out: Https://www.hydroponics.net/lear All tds meters are conductivity meters, but according to the article, they may not all use the same c..." | Read more » over 4 years ago
Ag8n "I think it is. Was hoping someone was more familiar than me. Different websites talk about charge and others about conductivity, which can be two..." | Read more » over 4 years ago
gretchengehrke "Hi @Ag8n, Do you know how the aquarium TDS meter works? Maybe it really is just a super cheap conductivity meter? " | Read more » over 4 years ago
Ag8n "Very interesting article. Thank you for posting it. Could you give more details on the turbidimeter you have developed? Regards " | Read more » over 4 years ago
warren "And also see: https://publiclab.org/questions/gretchengehrke/07-19-2017/can-commercially-available-water-sensors-work-with-diy-data-loggers " | Read more » over 4 years ago
warren "@cfastie - i remember you highlighted a few different interfaces Arduinos can use -- i2c, analog... do many sensors fall into one of these categori..." | Read more » over 4 years ago
warren "We're going to try to collect this info on this listing of different sensors over here! https://publiclab.org/wiki/water-sensors#Sensors " | Read more » over 4 years ago
donblair "Hi @gretchengehrke! Sorry for the much-delayed reply :) and thanks for the comment. I, too, liked this approach -- basically, using the differenc..." | Read more » almost 5 years ago
gretchengehrke "@donblair, I was just reading this again, and am again impressed by your elegantly simple approach -- such a great idea! It seems like this alterna..." | Read more » about 5 years ago
gretchengehrke "@bhikman, that integrated optical filter is neat, and surprisingly inexpensive! If you do pick this back up, I am super interested in seeing how we..." | Read more » about 5 years ago
bhickman "Hi @gretchengehrke. I kinda let this project fall though the cracks. I did have the sensor working pretty well, the only issue was interference fro..." | Read more » about 5 years ago