Measuring resonant frequency, the easier way
Bryan's analytical instrumentation page
Analog Devices - Chemical Analysis
Analog Devices - Environmental Monitoring
Design of Intelligent Conductivity Meter Based on MSP430F149
Fundamentals of Conductivity, Salinity & Total Dissolved Solids
Riffle dev: “Closer to Conductivity: Measuring 555 Oscillations with an Arduino”
Conductivity Sensing: Open Questions
Analog Devides - Fully Automatic High Performance Conductivity Measurement System
Soil Temperature/Moisture Sensor - SHT10 (Adafruit)
Control of soil humidity in an irrigation installation
Soil Moisture Sensor (LCD, RTC, SD Logger, Temperature)
Have a bumper crop with moisture sensors and ARDUINO
Arduino LCD soil moisture sensor
Turbidity Measurement Methods & Regulations
Measuring Turbidity, TSS, and Water Clarity - www.fondriest.com
The Turbidity Tube: Simple and Accurate Measurement of Turbidity in the Field
STANDARD OPERATING PROCEDURE FOR TURBIDITY MEASUREMENTS USING A TURBIDITY TUBE
TURBIDITY CONVERSION (NTU / mm)
Clearing Up Misconceptions About Turbidimeter Performance And Calibration
http://watermonitoring.uwex.edu/pdf/level1/data-DissolvedOxygen.pdf http://file.southernbiological.com/Assets/Products/Kits_and_Equipment/Specialized_Laboratory_and_Field_Equipment/Water_Quality_Test_Equipment/Turbidity/ENV8_21-Turbidity_Tube/ENV8_21_TurbidityTube.pdf http://www.wyomingstreamteam.org/Download/datasheets/Turbidity%20Instructions.pdf http://www.mdpi.com/1424-8220/14/4/7142/htm An Affordable Open-Source Turbidimeter From Turbid to Clear: How Flocculation Cleans Up Drinking Water https://www.sciencebuddies.org/science-fair-projects/project-ideas/EnvEng_p039/environmental-engineering/clean-drinking-water-flocculation#procedureMalaria Detection using Open Microscope and Deep learning
Single-frame 3D fluorescence microscopy with ultraminiature lensless FlatScope
Measure the mass of an eyelash with a DIY microbalance
Digital balance from any electrical panel meter
Homemade Microgram Electrobalances
Electronic Weight-Scale DIY Kit
Open-Source Quartz Crystal Microbalance
Gassistant - Monitor de consumo de gás usando célula de carga
Arduino Bathroom Scale With 50 Kg Load Cells and HX711 Amplifier
Absorption Photometry - PhysicsOpenLab
ATtiny85 Pulse Oximeter and Photoplethysmograph
Circuito para usar LED como sensor de luz
Using a LED Matrix As a Scanner
CLASSIFICAÇÃO DE ÁGUAS MINERAIS BASEADA EM IMAGENS DIGITAIS OBTIDAS POR SMARTPHONES
Colorimetric Water Quality Sensing with Mobile Smart Phones
Open-Source Photometric System for Enzymatic Nitrate Quantification
Photoresistor Characterization
Colorímetro (ART4132) - Newton C. Braga
Medidor Químico de Transparência (ART2597) - Newton C. Braga
DIY LED-photometer With Arduino for Physics or Chemistry Lessons
Spectruino - Arduino Spectrometer
Youtube - Product Showcase: Qwiic AS726X
DIY - Capillary Electrophoresis
Hackaday - Capillary Electrophoresis
Open Capillary Electrophoresis