1) Microbial fuel cell;

A biological process for energy production, wastewater treatment
2) Data logger;

A data logger  is an electronic device that records data over time
3) Spectrophotometer;

The spectrophotometer is an optical instrument for measuring the intensity of light relative to wavelength.
4) pH meter;

A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH.
5) Centrifuge;

A machine with a rapidly rotating container that applies centrifugal force to its contents, typically to separate fluids of different densities or liquids from solids.
6) Oven;

An oven is a thermally insulated chamber used for the heating, baking, or drying of a substance.
7) Digital scale;

A mechanical scale or balance is used to describe a weighing device that is used to measure the mass of a sample.
8) DO meter;

A DO meter measures the amount of oxygen dissolved in an aqueous solution.