Robinson Centrifuge Tubes, 100ml, Pear shape Tube, Graduated in %

Made to API/ASTM oil testing standards (Test Method for Water and Sediment in Crude Oil by the Centrifuge Method). ASTM D91, ASTM D96, ASTM D4007, ASTM D2709 and more.

Robinson’s Testing Tubes are constructed from clear annealed glass and feature white enamel markings on the outside of the tubes for accurate readings. All tubes are available with the conventional neck opening to accept a Tube Stopper (tube stoppers in cork or neoprene rubber sold separately, HERE), or with a threaded neck to accept a Screw Cap (screw caps included).

Dimensions (Cork & Screw Cap Styles); 17mm ± 1mm I.D. x 58mm ± 1mm O.D. x 157-160mm O.A.L.

Sold in Boxes of 6 tubes.

Graduated in 200 parts to permit the direct reading of S&W percentages in test samples.

Divisions of graduation:

• 0 to 3 % in 0.1%
• 3 to 5 % in 0.5%
• 5 to 10 % in 1%
• 10 to 100 % in 10%
• and from 100 to 200 % in 20%