ASTM D5828 Standard Test Method for Compatibility of Supplemental Coolant Additives (SCAs) and Engine Coolant Concentrates
6. Apparatus
6.1 Two-pan General Laboratory Balance, 1 to 2-kg capacity.
6.2 Centrifuge Tube, 100-mL capacity in accordance with Test Method D1796.
6.3 Centrifuge, capable of maintaining 500 rcf, with trunnions and specimen holders suitable for the tube described in 6.2.
6.4 Constant Temperature Oil Bath, or equivalent, capable of maintaining the test temperature at 88°C (190°F), within +/- 1°C (2°F).
6.5 Condenser Tube, glass, approximately 5-mm outside diameter by 3-mm inside diameter by 300-mm long.
6.6 Rubber Stoppers, to fit the centrifuge tube with a single hole for the glass condenser tube.
6.7 Rubber Stoppers, as above but without a hole.
6.8 Graduated Cylinder, 100-mL capacity to deliver.
6.9 Pipette, to deliver volumes from 1 to 10 mL in 1-mL increments.
6.10 Analytical Balance, for preparing reference materials and capable of weighing within an accuracy of +/- 0.2 mg or better.
7. Reagents and Materials
7.1 Purity of Reagents - Regent grade chemicals shall be used in all tests. Unless otherwise indicated, it is intended that all reagents conform to the specifications of the Committee on Analytical Reagents of the American Chemical Society where such specifications are available. Other grades may be used, provided it is first ascertained that the reagent is of sufficiently high purity to permit its use without lessening the accuracy of the determination.
7.2 Coolant Concentrate, and SCA for evaluation.
7.3 Reference SCA, and coolant concentrate solutions (see Annex A1 and Annex A2).
7.4 Deionized Water, in accordance with Specification D1193.
7.5 Nichrome Wire, or stainless steel wire.
7.6 Filter Paper, Whatman No. 4 or equivalent.
7.7 Plastic Containers, to store solutions. Polyethylene or polypropylene containers with screw caps are satisfactory.
7.8 Acetone. WARNING: Acetone is flammable.
7.9 Isopropyl Alcohol.
