The choice between piston and liquid withdrawal overpressure cylinders, otherwise known as traditional cylinders with overpressure for liquid hydrocarbon mixtures, is an important one – with a number of factors to be considered before a decision is made on the most suitable mixture type. 

Factors such as precision, maintenance, costs and certification levels should be considered to ensure optimum accuracy and value for money. 

To assist in this decision, BOC conducted a number of simulations to determine the effects of hydrocarbon mixtures in contact with overpressure gas including helium, hydrogen and nitrogen. 

The results are important to consider when choosing between a piston cylinder and a traditional cylinder, and when deciding how to use a traditional cylinder. This will help laboratory managers and maintenance teams using piston cylinders or traditional cylinders better understand the benefits and disadvantages of each. 

BOC can assist with this by providing detailed composition use charts for your mixture of choice upon request. To read our white paper, click here.