Dyne Pens Specialists

What is the shelf life of Dyne Testing “Valve Tip” test pens?

The expiry date is generally 6 months from manufacture. We never ship pens that are older than 8 weeks. 

What does “Shelf Life” really mean?

In short, the “6 month from manufacture” shelf life is our best estimate of a reasonable time frame before which changes are likely to occur under correct storage and normal use. It is essentially a risk/reward decision, with the time frame set at the point where the risk may begin to appreciably increase.

Should I wait until our Dyne Testing “Valve Tip” Test Pens have reached their expiry date before I replace them?

Typically users replace their Dyne pens every 4-6 months, some prefer to replenish as frequently as every month. Our general recommendation is that if the Dyne test is a critical quality parameter in your business then you should replace your pens every 3 months.

What happens to Dyne Testing “Valve Tip” Test Pens after the 6 month shelf life has expired?

In some cases, fluids test perfectly well for many months after the shelf life has expired. In other cases, the Dyne level of the fluid drifts within a relatively short time frame after the shelf life period. Even fluids that have been neither used nor opened, and stored in a controlled environment will eventually change Dyne level due to chemical reactions among the constituents. Frequent use, high temperature or humidity, airborne dust or other contamination will all tend to exacerbate any inherent physicochemical changes and could significantly shorten the useful life of a Dyne test pen. 

One advantage of our Dyne test pens (unlike bottles of Dyne test fluids) is that they are fully enclosed, even during use, so there is very little potential for evaporation altering the Dyne level.

Disposal of Test Markers and Spent Samples

Refer to the Safety Data Sheet issued with the product at the time of purchase.

Expired Test Markers

Please dispose of expired test markers and fluids in compliance with all local and national regulations.

You will need to provide the Safety Data Sheet issued with the product at the time of supply to your contracted hazardous waste handling supplier as it contains important classification data that they will need to properly process the waste material.

Spent Samples

Spent material samples must be handled with care. Disposal of these contaminated materials presents exposure hazards.

You will need to provide the Safety Data Sheet issued with the product at the time of supply to your contracted hazardous waste handling supplier as it contains important classification data that they will need to properly process the waste material.