Assess Turbidity in Water
turbidity

As explained [in @donblair's primer](/notes/donblair/08-25-2015/turbidity-001), measuring turbidity means "measuring the amount of suspended solids in water -- solids that haven't fully dissolved". That is, "turbidity, an optical technique for assessing suspended solids in liquid -- is an important water quality parameter. Typically, light is shone into a liquid sample, and the amount of light scattered back out of the sample (off of particles suspended in it) is measured; the intensity of this scattered light is considered to be related to the amount of suspended solids in the sample." ([reference](/wiki/turbidity_sensing)) _image credit: https://castlebrookestreamstudy.weebly.com/_ This page needs help! * Info about regulations * Info about ecological or human health impacts * Advocacy leverage points * Constraints we're working within: cost, complexity, sensitivity, time There are a LOT of resources available on these pages by @donblair and others: * https://publiclab.org/notes/donblair/08-25-2015/turbidity-001 * https://publiclab.org/wiki/turbidity_sensing **** ## Questions [questions:turbidity] **** ## Sensors Here's a list of different turbidity sensors and measurement systems. See below for some Do-It-Yourself approaches to measuring turbidity, and [this page](https://publiclab.org/wiki/turbidity_sensing) for more information on how turbidity sensors works. * Kelley et al., An Affordable Open Source Turbidimeter http://www.mdpi.com/1424-8220/14/4/7142/pdf * Hackteria.org, Turbiduino: http://hackteria.org/wiki/DIY_turbidity_meters * Lambrou et al., A Nephelometric Turbidity System for Monitoring Residential Drinking Water Quality: http://www2.ucy.ac.cy/~faniseng/publications/SENSAPPEAL09.pdf - Fondriest review: http://www.fondriest.com/environmental-measurements/equipment/measuring-water-quality/turbidity-sensors-meters-and-methods/ - Hach overview: http://www.hach.com/asset-get.download-en.jsa?code=61798 (see [Water sensors](https://publiclab.org/wiki/water-sensors) for more, and [click here to add to this table](https://docs.google.com/spreadsheets/d/1UwjRqU8kHTwEcnDdO2Zxkr8zkFkaGfyePJ-cdnxJzw0/edit#gid=28737041)) **** ## Activities Activities for people to test methods (these develop over time) [activities:turbidity] **** ## Existing work [notes:turbidity] ...


Author Comment Last activity Moderation
mamamia0819 "Nice project! Our company(https://www.creative-biogene.com) is also engaged in microbe species. Your task is quite useful. " | Read more » 9 months ago
sirazul71 "Nice writing. Thanks Life Store is one of the best and most popular online stores. You will find everything you need in the life store. Visit in ou..." | Read more » 10 months ago
alejobonifacio "¡Hola! Los últimos días fui al río Suquía en Córdoba, Argentina y tomé algunas fotos ...: flash de cámara: En este lugar se supone que solo llega a..." | Read more » 10 months ago
bhamster " @bhamster has marked @alejobonifacio as a co-author. " | Read more » 11 months ago
liz "Have you thought at all about whether you are aiming to go directly to procuring lab data of baseline water quality that lab scientists will testif..." | Read more » about 1 year ago
waniakzmi "You are doing well for well-being looking forward to it we are working to provide the best ease by providing medical equipment and products online ..." | Read more » about 1 year ago
MarketingWeb "Excellent article. I'm starting to look for information about the quality of the water we drink and your article helped me a lot. Thanks. " | Read more » about 1 year ago
louiseb90 "It's great work. Useful for many countries that want to know the quality of their water. Thanks for this article. " | Read more » over 1 year ago
digitaldipak "Loved the tips given with proper and up to date insights. Thanks a lot for sharing such innovative ideas on such a demanding topic. Good day Printo..." | Read more » over 1 year ago
Sholihul "Where for buy container to turbidity? " | Read more » over 2 years ago
mcafeecloud "This is very Amazing and Very Informative Artical we get a lot of information from this article we really appreciate your team work keep it up and ..." | Read more » over 2 years ago
joyofsoy "@mmbaustian did exactly this in Barataria Basin! Curious to know the answer from Hoon — Cyndhia R. (@CoastalRedwoods) February 5, 2020 " | Read more » over 2 years ago
joyofsoy "Perhaps if you collect both secchi and turbidity data frequently over a long time period at different sites and plot all the data, you could identi..." | Read more » over 2 years ago
joyofsoy "Maybe you could make a daily calibration curve?— Diana R. Di Leonardo (@SwirlingSands) February 5, 2020 " | Read more » over 2 years ago
joyofsoy "You could maybe make one for a specific site but I'd want to test it over a long time period before using it.— Diana R. Di Leonardo (@SwirlingSands..." | Read more » over 2 years ago
joyofsoy "And if you were to come up with a conversion factor, I imagine it would probably be very site and time specific, it wouldn’t be a value you could a..." | Read more » over 2 years ago
joyofsoy "We shared this question on our social media and received these responses From my understanding, secchi disks are a measure of light penetration de..." | Read more » over 2 years ago
Tarek_Omar "The digital sensor tell the turbidity by measuring how much of a known light intensity reaches its light sensor in a known amount of liquid and its..." | Read more » over 2 years ago
nehagupta9994 "We are providing social media account which helps to grow your business and you connect many peoples and increase your connection and followers. li..." | Read more » over 2 years ago
emawatson12 "I apapricate your content Ema Watson " | Read more » over 2 years ago
wmacfarl "This screw actually /doesn't/ calibrate the sensor. It sets the /threshold/ for digital output. I completely forgot about this when I wrote my re..." | Read more » over 2 years ago
warren "I think there is a little screw that can be turned to "tune" each sensor board, so I wonder if you could put both in the same sample and use a smal..." | Read more » over 2 years ago
zengirl2 "Hey, I have a couple of questions that may help to look at the hardware side: Did you use a phone cable for the USB or is it a legit cable used f..." | Read more » over 2 years ago
webbhm "@mimiss These sensors are cheap because they have limited accuracy, they were designed for dish-washers and the like, not technical analysis. Howe..." | Read more » over 2 years ago