Dialysis Flow Meter
Attached are pictures of the flow Meter components used by a major Healthcare company with an ARCOR designed and manufactured product and process (R-7)
We made the R-7 product originally as a both a methanol and nitromethane resistant product that could be used in Flow meters for top fuel dragsters and Funny Car dragsters.
One such company had been using the product for several of years. This lead to a contact between engineers at the company and a healthcare manufacturer.
They were having similar problems with materials they were using in their flow meters for dialysis. The product for use in dialysis flow meters they produced had issues with swelling over time, resulting in imprecise measurements.
ARCOR manufactured the epoxy product, but also manufactured the rods (see the picture) sent to the healthcare company and used as the raw material they cut into thin wafers which were machined into the rings you see in the pictures . Very specific, tight tolerances.
The (4) white markings on the ring in the picture are phosphorescent markings applied after the ring is approved for tolerance with no imperfections. Within the flow meter the ring would spin and a light would reflect off the dots and allow a determination of rotation speed, hence flow rate.
It is our understanding that (4) flow meter units were in every dialysis machine and each had (1) such marked ring.
After 10 years of manufacture of the material and rods, the healthcare company asked ARCOR to sell the flow meter epoxy formulation and the rod manufacturing process. In 1996, we completed the sale of the material and process.
To our knowledge the ARCOR developed epoxy and manufacture method is still used today.
Note: the original product used for top fuel dragsters was due to a need to have a methanol resistant product. In the 1980’s the fuel used was nearly 100% methanol and the products used in flowmeters would absorb the methanol over relatively short times which would create issues with consistent flow. A big problem in top fuel and funny car which could lead to disastrous consequences.
ARCOR developed a Methanol resistant epoxy which was based off of our Ultra S (which is today EE-10).
The methanol resistance knowledge later led to our development of a new methanol resistant coating product EE-12, used as a pump coating by a major manufacture of Methanol.
Continued modification and development of that product has led to today’s EE-121, EE-121HT and EE-951.
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