Atlas Scientific Basic EZO™ Inline Voltage Isolator

Atlas Scientific EZO-pH Embedded pH Circuit .001-14

Atlas Scientific 8:1 Serial Port Expander

ELEGOO 17 Values 1% Resistor Kit Assortment, 0 Ohm-1M Ohm (Pack of 525) RoHS Compliant for Arduino, Respberry Pi Projects

Gikfun 12V DC Dosing Pump Peristaltic Dosing Head with Connector for Arduino Aquarium Lab Analytic DIY AE1207

General Hydroponics pH Control Kit

ELEGOO 3pcs MB-102 Breadboard 830 Point Solderless Prototype PCB Board Kit for Arduino Proto Shield Distribution Connecting Blocks

Atlas Scientific EZO-ORP Oxidation-Reduction Potential Embedded Circuit -1019.9mV-1019.9mV

Atlas Scientific EZO-EC Embedded Conductivity Circuit 0.07 - 500,000+ μS/cm

Apera Instruments 2301-C Conductivity Electrode (K=1), Range: 0.5 µS/cm to 200 mS/cm, BNC Connector, Polycarbonate Body