Manufactured to the specifications of the American Society for Testing and Materials (ASTM). Select the hydrometer that you need by matching the ASTM number shown in the table * Calibrated for use at 15°C/60°F * Not recommended for use with hydrofluoric acid SPECIFICATIONS: * ASTM No.: 127H * Color: Clear * Length: 10.2 in (26 cm) * Measuring Type(s): Specific Gravity * Quantity: 1 Each * Specific Gravity Range: 1.100 to 1.150 * Subdivisions: 0.001 * Warranty: 1 Year