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This ergonomic and affordable carboy cleaning and rinsing system is available from WMProcess to improve COP clean out of place for smaller scale tanks and containers. These are very effective for poly tanks used in biopharma and laboratories for Buffer prep and salt solution makeup.   WMProcess carboy rinse station is compact and effectively COPs various size drums, carboys and containers – the WMP-COP/CRS-50SAN handles up to 50gal tanks


30” dia x 60” tall, bottom drain 18” off floor

Standard unit includes poly housing as shown in photo, spray nozzle, platform for setting carboy into place and inlet port for rinse solution and outlet port on self-draining cone bottom.

Custom Units Available


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Hastelloy C For Your Mixing & Blending Process

Typically the top entry agitator will have Hast C for the mixer shaft, mixing impeller, and often times the flange mount and mechanical seal – so all “wetted mixer parts” are corrosion resistant.   Many people have asked for Hastelloy C-276 but instead they were pushed into getting Hastelloy C-22 instead. This may have also happened to you, and now you may be wondering what the differences between them are, and why some people prefer one over the other.

Reasons Why C-22 Is Considered The Better Choice Than C-276
C-22 is more resistant to corrosion than Hastelloy C-276, and this is one of the reasons why many people prefer C-22 over C-276.

The cost of the material as well as the lifespan of the material will depend on how well it can withstand different environments. There are quite a few differences in the chemical compositions of C-22 and C-276. C-22 is around 22% chromium while C-276 is around 16% chromium. This may not seem like a big deal but that 6% difference is actually what allows C-22 to be more resistant to corrosion, and this improves the lifespan of the material by quite a bit; in matter of fact it improves the life by 5-10 times.

Oxidizing environments are found in numerous of sources, and some of the most severe ones are found in sodium chloride, sulphuric acid and hydrochloric. C-22 can withstand such environments, and C-22 also shows that it has great resistance to seawater, brine solutions, acetic anhydride, acetic acids, inorganic acids and hot contaminated organic acids to name just a few. 

When compared to C-276, C-22 also has great resistance to stress corrosion cracking, pitting and even crevice. As you can see by now, you know why C-22 is the better choice and why people prefer C-22 over C-276. 

You should also know that C-22 and C-276 has underwent testing in oxidizing mediums for crevice corrosion and pitting. The test revealed that C-22 is much more resistant to oxidizing media than C-276, which is yet another reason why many people prefer C-22 over C-276.

One of the reasons why C-22 is so resistant to corrosion is because C-22 weld filler materials actually provides great weldability. 

Many people have complained about the corrosion in their welds, but materials that have been filled with C-22 have addressed many concerns that people have had. 

It is also worth mentioning that C-22 is also resistant to inter-granular corrosion in HAZ, or heat-affected zone, of weldments. 

Both C-22 and C-276 have been tested in how well they handle exposure to oxidizing sulphuric acid solution, and C-22 only faced very little corrosion, while C-276 suffered from severe corrosion.

C-276 also suffered from severe corrosion when it was tested in the saturated wet chlorine environment. C-22 did a good job at withstanding higher temps in the same phases that the C-276 went through.

All of the above factors show that C-22 is the much better choice than the C-276 material. When you need material for your process, the choice is clear and that choice is C-22. C-22 has a great lifespan and great performance.

For any corrosion resistant exotic alloy mixer, or for non metallic agitators and impellers contact

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