Standard delivery for hydrocarbon mixtures is 2 – 3 weeks and sulphur mixtures is 4 – 5 weeks delivered to UK or ex works Worldwide.
		Express delivery for hydrocarbon mixtures only is 1 week delivered to UK or ex works Worldwide. This is due to our new state-of-the-art gravimetric production facility coupled with our ISO 17025 accredited calibration laboratory at the same site.
		No cylinder rental charge. The cylinder is purchased outright initially with the first mixture and refilled by us when required at a lower cost. Cylinder pressure tests are included and we will arrange this service at no extra cost.
		Gas mixtures which are not unconditionally stable will be issued with a shelf life. We send reminders to clients when mixtures approach the end of their shelf lives, thus preventing out of date mixtures being used.
		We will design the gas mixtures appropriate for the clients requirements but also maximising cylinder fill pressures through gas liquid phase equilibrium calculations.
		The new “Ask the expert” blog allows access to World leading scientists and metrologists who can help with issues and queries relating to calibration gases, gas analysis, flow measurement, hydrocarbon dewpoint and emissions trading schemes. Click here to ask a question.
		Use our new software “Fiscal Gas Risk” which is a stand alone executable which will highlight in monetary terms the risk associated with flow and gas quality measurement uncertainties. Simply login and click Fiscal Gas Risk or if you are new to EffecTech, please click here .

As gas chromatography is a comparative method, the final accuracy of the analysed composition, and that of any physical property calculated from it, is principally dependent on the quality of the calibration gas mixture used.

The uncertainty on calorific value can be halved by using a gas mixture which has been calibrated by our UKAS calibration laboratory instead of a typical gas mixture direct from a compressed gas manufacturer.

Using a primary reference gas mixture, gravimetrically prepared by a metrology laboratory, can further improve the uncertainty again but at a vast increase in cost.

Design

Natural gas composition can vary from region to region and also vary on a daily and seasonal basis. EffecTech has experience in designing your calibration gas to meet all your needs. We take into account aspects such as

• Variation of delivered composition
• Operational temperature and pressure
• Accuracy needed to make it fit for purpose

UKAS accredited certificate of calibration

EffecTech, through its UKAS accredited calibration laboratory, provides gas mixtures of the highest conformity in terms of traceability, accuracy and stability. We ensure you receive the best solution to your nominal concentration, blend tolerance and analytical uncertainty requirements. Accredited analytical methods are used to provide calibration certificates of the highest standard available in the industry. (See schedule of accreditation.)

Use of a calibration gas with our calibration certificate greatly reduces the financial risks that you are exposed to as a result of inaccurate measurement of the energy content of your gas. The extra cost of the certification is negligible compared to your financial exposure.

If you do not require the improved accuracy that a UKAS calibration certificate can give you, we would still recommend that EffecTech designing and providing your calibration gas for you is cost effective.

Delivery and installation 

We deliver to site and, if necessary, connect the cylinder, ensuring a leak free installation. We will also update any controllers or integrators and carry out a calibration so that the instrument is ready for automatic use without any delays.

Expertise and experience 

You are not only buying our product but also our experience and advice with regard to the use of the reference mixture and the realisation of traceability. The use of the most appropriate calibration gas mixture is only one part of the gas measurement chain. The optimisation of the gas measurement process relies on understanding and deployment of best practice, the use of quality control and getting all other steps of the gas measurement chain correct.

UKAS schedule of accreditation - calibration  

For our official Schedule of Accreditation issued by UKAS - Click here