So that you receive meaningful results based on the oil samples that you send in, follow our guidelines on how to take samples. You will find them under „Take & send samples“ on www.oelcheck.de. Please only use the pre-paid OELCHECK sample containers, which were specially developed for lubricant samples. They comprise the relevant full scope of the test and a meaningful diagnosis, depending on the colour of the lid.
The empty containers and their lids are packaged individually. That way, we can ensure that the containers remain as pure as possible. Contamination of samples, for example with dust particles or moisture, is impossible if the packaging is not opened until on site. However, not even our sturdy sample container made from PET can fully protect the lubricant sample from environmental influences forever. If you leave a sample in the sunlight for a long time, the colour of the oil could change. Antioxidants in turbine oils can make the oil look violet after a few days and light hydraulic oils turn darker under the effects of light. However, with the exception of the colour, the typical characteristics ascertained don‘t change. If the oil sample is exposed to greater fluctuations in temperature, the water content of some oil types can also change during storage time.
Our specially designed PET sample containers are clean and temperature-stable, can be sealed firmly and have proven themselves on millions of occasions. However, even they‘re not suitable for every type of lubricant. Refrigeration compressor oils, for example, almost always contain residual gaseous refrigerating agents. For these, we offer gas-tight sample bottles made from glass with a metal cover (see pg. 3 of this edition). They can withstand the pressure of the gaseous refrigerating agents and ensure that even tricky samples make it to the OELCHECK laboratory safely. Also for transformer and insulating oils, special gas-tight glass syringes and aluminium containers (see ÖlChecker Winter 2011) are integral parts of the relevant analysis kit.