The Ridgid Micro CD-100 Combustible Gas Detector provides simple and quick readings to identify the presence of combustible gases. Detects Methane, Propane, Butane, Ethanol, Ammonia, Hydrogen and many other combustible gases. With adjustable sensitivity, even low-levels of gases can be detected. Ideal for ensuring proper gas line installations, checking for maintenance and repair needs, or quickly pinpointing combustible gas leaks. The rugged ergonomic design makes it capable of withstanding jobsite rigour. Tri-Mode Detection™ provides visual, audible or vibration alert which can be adjusted for different environments. A 16in flexible probe allows location and detection of leak in hard-to-reach and confined spaces. Specifications: Detection Range: 0- 6,400ppm (Methane).Alarm Sensitivity: 40ppm (Methane).Calibration: Automatic.Power: 4 x AA batteries (supplied).Classifications: Class B, Division 1.

This Faithfull pH Meter is easy to use and an essential instrument for both the professional and keen gardening enthusiast, providing a quick, no fuss method of measuring the pH (acidity and alkalinity) value of soil.Knowing the pH value is very important and directly influences the health of plants, using this meter to provide an accurate reading will allow the pH level to be adjusted accordingly to best suit the plants being grown prior to planting.The meter can also be used to help identify the best growing environment, and area for growing outdoor plants, shrubs, vegetables, trees, and for improving, modifying soil in your garden.Features:Analogue needle Acid-Alkaline indicator.Accurate pH soil reading in 60 seconds.Ideal for fruit and vegetables.No batteries required. To change soil pH: A. To increase the pH value, lime should be added. Lime is a compound of calcium, or calcium and magnesium. Applied in the form of ground agricultural limestone, burnt lime or hydrated lime for the quickest result. B. To decrease the pH value use either aluminium sulphate or sulphur. Aluminium sulphate is the quickest acting as it will increase the acidity as soon as it dissolves into the soil.Quantities of additives will vary depending on the type of soil, consult a gardening book or professional gardener if further advice is needed.

The Faithfull Digital Lux / Light Meter is ideal for use in electro-optical sources, research teaching, industry inspection as well as agricultural research and illumination control. It can be used to assess and monitor indoor area light levels, such as greenhouses, warehouses and office space. This device is able to measure light from many different types of bulbs, ensuring high levels of accuracy throughout. It includes a light meter and light sensor and will work with fluorescent, metal halide, high-pressure sodium and incandescent sources. Supplied with battery, user manual and storage case. Specification: Range: 1-50,000 Lux in 3 ranges 2,000/20,000/50,000 LuxSampling Rate: approx. 2 times/secondSensor: Silicon photo-diode and filterEnvironment: Indoor operationAltitude: Up to 2000mCalibration: Standard incandescent lamp at 2854KPower: 1 x 9V PP3 battery (supplied)Dimensions: 192 x 67 x 44mmWeight: 198g