ASTM E982-94(R2021) pdf free download

ASTM E982-94(R2021) pdf free download.Standard Specification for Laboratory Glass Test Tubes
1. Scope
1.1 This specification covers glass test tubes suitable for laboratory use. 1.2 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Material
4.1 Test Tubes—Test tubes shall be made of borosilicate glass conforming to the requirements ofType I or of soda-lime glass conforming to the requirements of Type II glass of Specification E438. 4.2 Screw Caps—Class A and B screw caps shall be molded of phenol-formaldehyde type resin, which is free of cellulose acetate and urea, in accordance with Specification D700. Class C screw cap shall be molded of polypropylene resin in accordance with Specification D2146. Screw caps shall not deform, crack, turn color, or become tacky; and liners shall not detach or become tacky when autoclaved the first time. 4.3 Liners—Liners for Class A screw caps shall be fabri- cated of resilient white rubber. Class B caps shall have a polytetrafluoroethylene liner interface firmly bonded to the glued-in white rubber liner as described for Class A caps. 4.4 Annealing—Maximum thermal residual stress shall be in accordance with Specification E671.
5. Design
5.1 Shape—Test tubes covered by this specification shall be tubular, with one end having a rounded closure. 5.2 Capacity—Capacities on ungraduated tubes are only approximate, but any graduation on Type II tubes shall indicate the contained capacity within 65 % of nominal tube capacity. 5.3 Types Iand II—The open end ofTypes I and II test tubes shall have a beaded rim; dimensions shall be as specified in Table 1. 5.4 Type III—The open end of Type III test tubes shall have a standard taper stopper. The joint and stopper shall be in accordance with Specification E675 and Table 1. 5.5 Types IV, V, and VIII—The open end ofTypes IV, V, and VIII test tubes shall be rimless and fire polished, dimensions shall be as specified in Table 1.5.6 Type VI—The open end of Type VI test tubes shall have a standard GPI thread finish made to accommodate a plastic screw-on type cap. The inner edge of the cap shall be sufficiently threaded with a continuous thread formed as an integral part of the cap. The cap shall form a close fit with the tube to prevent loss of the contents. Class A and B screw caps shall be lined with tight-fitting cemented-in liner. Class C screw caps shall be one piece and shall contain no liner. Dimensions and threaded finish of the test tubes shall be as shown in Table 1. 5.7 Type VII—The open end of Type VII test tubes shall have a beaded rim and a ribbed sidearm near the open end. Dimensions shall be as specified in Table 1. 5.8 Area for Marking—Side wall oftest tubes (except Types VII and VIII) may have an area that provides for marking. This area shall be durable, fused-on white enamel or roughened by sandblasting.