Gas Detection Calibration and Testing Services from a multi-service specialist

Pharmaceutical and healthcare specialist service provider

Detailed, multi-parameter testing

Prompt results and comprehensive reporting

Out-of-hours monitoring and permanent monitoring systems

Intech’s Gas Detection System calibration and Testing ensure that your equipment is working correctly and is measuring accurately.

Health and Safety is always at the forefront of all we do at Intech, we understand the importance of environmental safety monitoring and the implementation of safeguarding systems to help prevent and mitigate risk. We offer installation, operational and qualitative testing for an extensive range of Gas Detection systems throughout the United Kingdom. Our planned preventative maintenance (PPM) program ensures that periodic function tests (Bump Tests) and Calibration Tests are completed and documented to industry standards.

The Importance of Periodic Function Tests (Bump Tests):

Equipment is functioning correctly and alarms are activated
Detectors are measuring gas concentrations accurately
Routine calibration mitigates sensor drift
Any performance issues are found and rectified through regular testing

The Importance of Calibration

Calibrating your gas detection system is crucial for maintaining the accuracy, functionality, and safety of your meter, and ensuring compliance with relevant industry standards.
On average Sensors may experience a drift in calibration ranging from less than 2% to nearly 5% over a short period of time, influenced by factors such as usage, temperature, humidity, exposure to contaminants, high gas levels, and the effects of aging or physical shock.

It is advisable to calibrate these devices regularly, ideally every 3, 6, and 12 months intervals, to guarantee not only precision but also safety, ensuring that alarms are activated in the event of gas exposure.

The calibration process consists of two steps: first, the detector is adjusted to zero in an environment that simulates “clean air.”
Following this, the detector is exposed to calibration gases with known concentrations of the target gas.
Any discrepancies from the expected results are then rectified.

With increasing regulatory demands for stringent gas detection calibration protocols and the necessity for systemic bump testing, the availability of test gas has become essential. Gas detectors are vital for the safety of personnel and facilities, making it imperative that this equipment remains operational.

Abbreviations

GAS: A gas is defined as a state of matter consisting of particles that have neither a defined volume nor defined shape.
Vapour: A mist or fumes that are suspended in the atmosphere.
LIQUID: A liquid is a form of matter. It is settled between solid and gas. Liquid has an almost-fixed volume, but no set shape.
PPM: Parts Per Million.
TLV: Threshold Limit Value.
TWA: Time Weighted Average.
STEL: Short Term Exposure Limit.
IDLH: Immediately Dangerous to Life and Health.
LEL: Lower Explosive Limit.
UEL: Upper Explosive Limit.

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Hazards of Gases

Gas hazards are found in all types of business and industries and can be categorized into three main categories:

Oxygen hazards,
Explosive gases and flammable vapors,
Harmful or toxic gas hazards.

Oxygen Hazards: Nominal environmental oxygen levels are 21%, the optimal range of oxygen for humans is 19.5% – 23.5% if it drops below 19.5% an Inadequate oxygen supply in the air we breathe can be fatal, Similarly, if there’s too much oxygen, it can be a significant safety concern, higher than normal oxygen levels aren’t as harmful to life, but there is an increased change of fire or explosion risk due to the oxygen rich environment.
Explosive Gases and Flammable Vapors: When explosive gases and flammable vapors mix with air in specific volumes. A gas explosion is the ignition ofa mixture of air and flammable gas, typically from a gas leak such as natural gas, methane, propane, butane. In industrial explosions many other gases, like hydrogen, as well as Gasoline, Ethanol and Acetylene.
Harmful or Toxic Gas Hazards: These hazards cover a wide range of gases, from inert gases like nitrogen, which can displace oxygen, to nerve gases like Hydrogen Sulfide, which chemically interferes with the cells in our body. All gases need to be treated with caution and ensure that safety protocols are followed.

GAS	TLV	STEL	IDLH
H2S (Hydrogen sulfide)	10 PPM	15 PPM	33 PPM*
Cl2 (Chlorine)	0.5 PPM	01 PPM	10 PPM
NH3 (Ammonia)	25 PPM	35 PPM	100 PPM
CO (Carbon monoxide)	25 PPM	400 PPM	1500 PPM
SO2 (Sulfur dioxide)	02 PPM	05 PPM	100 PPM

TVL	Threshold Limit Value	The TLV for chemical substances is defined as a concentration in air, typically for inhalation or skin exposure. Its units are measured in parts per million (ppm) for gases and in milligrams per cubic meter (mg/m³) for particulates such as dust, smoke and mist.
STEL	Short-term Exposure Limit	A short-term exposure limit (STEL) is the acceptable average exposure level over a short period of time, usually recorded within 5 minutes if the time weighted average is not exceeded.
IDLH	Immediately Dangerous to Life and Health	The term immediately dangerous to life or health (IDLH) is the limit set for no exposure, as airborne contaminants are “likely to cause death or immediate or delayed permanent adverse health effects or prevent escape from such an environment.

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We were pleased to discover that Intech could take care of IAQ testing for us along with the calibration of our FMS. The report was far more detailed than our previous provider and we were pleased to find that the format of the report was similar to other documentation sent to us by Intech. Such a simple thing can make document review easier.
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What we do

Calibration

Our comprehensive range of industry-leading calibration services includes an extensive list of on-site and laboratory-based instruments and equipment

Temperature Mapping

Experts in multi-point temperature mapping services, we are adept at producing fast and accurate results on equipment and facilities

Cleanroom Validation

We provide comprehensive on-site cleanroom validation services, as governed by BS EN ISO 14644 and GxP/GMP

Fume cupboard servicing

We provide these services for all makes and models of fume cupboard and LEV across the UK.

LEV and validation servicing

We offer comprehensive servicing of all LEV type systems so that you comply with HSG258.

Technical resource hire

We provide skilled and experienced Calibration, Validation and CQV professionals for hire on long and short term contracts.

Staff training

We offer a range of training courses designed to equip calibration professionals with the knowledge and skills they need to excel in their roles.

Calibration administration and support

We offer calibration master list (CML) administration and support services, helping you maintain a comprehensive record of your calibration activities.