The grips and fixtures are designed to operate with testing machines, force gauges and test stands. These are used to test wires, chains, cables, fibre optic cables and metals at low or high force using materials testing instruments. These come in a variety of sizes, gripping surfaces, styles and capacities. There are many different types of grips such as chuck grips, coefficient of friction fixtures, collet grips, and self-tightening grips.

Hand-held titration cell is an ampoule 13 mm in diameter designed for titrimetric analysis. The ampoule contains vacuum sealed liquid titrant and has an attached flexible valve assembly. Reagents are pre-standardized and pre-measured into calibrated titration cells.

Hardness testing is a widely used method for measuring hardness. This test is based on the principle that the amplitude of oscillation of a rocking device decreases the softness of the surface of a coating on which the test is performed more rapidly. The tester automatically records the number of swings made by a standard rocker in contact with the test sample and is rolled to the right until the bubble in the left-hand vial is visible. The rocker is then released and each total appearance of the bubble in the right-hand vial is counted. The counter is stopped when the bubble is no longer seen.

Hazmat testing services performs compression testing, leak testing, package integrity testing, package strength testing, shock testing, validation, and vibration testing. If a company is engaged in the transportation of hazardous material they are obligated to comply with the requirements set forth in the hazardous material regulations (HMR) published by the department of transportation (dot), title 49 CFR. Packages with integrity can help reduce the likelihood of hazardous accidents.  This same type of packaging can also reduce the chance that shipments will be rejected by overseas customs for non-compliance.

High-potential/HI-POT testing verifies the integrity of the insulation system between primary and secondary as well as primary and grounded metal parts. It is a potentially destructive test used to determine the integrity of insulation. Voltage levels employed in this type of test are twice the rated voltage plus 1,000 volts. This method is used primarily by some equipment manufacturers and rebuilding facilities as a quality assurance tool.

Hoist Load Testers are used to test hoists in accordance with ASME B30.16 and B30.21 requirements. It performs a static load test for manually operated hoists. It can be used to test either manually operated hoists or electric hoists. It eliminates the need for bulky test weights. It applies the test load while the hoist is in operation and it runs on 220 V of single-phase power.

Hydraulic test equipment is used in testing the performance, endurance, or other aspect of a hydraulic pump and motor, or valve.

Hydrocarbon layer thickness monitors are used in oil/water separators, groundwater wells, sumps (wet), tanks and ponds to monitor the thickness of hydrocarbon and various other organic solvents. It consists of a controller (signal processor) and one or more sensors, depending on application needs. It monitors the thickness of hydrocarbons and other organic solvents on water in many applications including remediation control, skim tanks, monitoring oil/water separators and wastewater sewer monitoring. This system monitors oil thickness changes over time in groundwater wells to enable effective oil removal methods.

Hydrocarbon on water detector is designed for sumps, tanks, ponds, and groundwater wells. It consists of a controller and one or more sensors, depending on application needs. The sensor is installed in sumps and in groundwater monitoring wells to detect floating oil sheens resulting from oil leaks in underground storage tanks and pipelines. It is also used to monitor hydrocarbons and other organic solvents during site assessment and remediation.

Hydrocarbon on water wave rider detector is designed for marine offshore applications, lagoons, lakes, rivers, open canals, and large retention ponds. This system consists of a controller (signal processor) and one or more sensors, depending on application needs. The sensor is designed for installation at offshore oil tanker buoy terminals, jetties, and piers to detect floating oil sheens resulting from spills or leaks occurring during the loading and offloading process. Its additional applications include detecting and monitoring floating hydrocarbons in lagoons, lakes, rivers, open channels, large retention ponds, and near offshore oil rigs.