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  1. snapper3

    Brass/Copper Conversion Coating

    I work for a company that provides brass and copper machined and assembled end products. For the past several years we have treated those products with a brite-dip and then chromate conversion coating called Luster-On 70. The Luster-On 70 was a powder that we could add to our small dip tank (70...
  2. snapper3

    LN2 pumping problems

    Greetings Cryo Experts! I'm new here and was hoping to get some information about a problem we're having with our LN2 pumping system. First, here's some specs on our system: Pump - DPD series footmount recip by Pittsburgh Cryo, 4000psi max, not sure of GPM Tank - 1500 gal, 96" high, topped off...

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