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7660-Centrifuge Tubes, Conical, Penny Head Stopper, Graduated

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7660-Centrifuge Tubes, Conical, Penny Head Stopper, Graduated

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  • Graduated
  • The 5 and 15ml size are graduated upward from the tip in 0.1ml divisions.
  • The 50ml size is graduated upward from tip to 10ml in 0.5ml divisions and from 10 to 50 in 1ml divisions.
  • The Penny Head Stopper is solid.
PART  No. Capacity (ml) Stopper No. Approx. . O.D. x Length (mm) Exclusive of Stopper PACK Qty.
7660-5.0 5.0 9 13 x 120 50
7660-15.0 15.0 13 17 x 139 50
7660-50.0 50.0 16 28 x 151 50

Conical centrifuge tubes with penny head stoppers and graduations are used in various ASTM tests to measure the purity and quality of oils and other fluids. Key uses include:

  1. ASTM D91: Precipitation number in lubricating oils.
  2. ASTM D96: Water and sediment in crude oil.
  3. ASTM D893: Insolubles in used lubricating oils.
  4. ASTM D1796: Water and sediment in fuel oils.
  5. ASTM D4007: Water and sediment in crude oil (field test).
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