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
Development of capacitive sensor for measuring soil water content
Capacitive Soil Moisture Sensor Arduino Circuit diagram and programming
Interface Capacitive Soil Moisture Sensor v1.2 with Arduino
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#procedureRaspberry Pi HQ Camera Microscope - a Minimalist LEGO Version
Malaria 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
Sensoreamento com Infra-Vermelho com TIL78
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