Density tester PT-TD300

for paintcementfor grain

Tapped Density and Apparent Density Testing Instrument The PT-TD300 is used to test the tapped (or “tamped”) density and apparent density of powders, granules, pigments and similar products in compliance with the current USP methods 1 and methods 2 as well as with EP , DIN EN ISO 787-11, ASTM B527 and ASTM D7481.18. The instrument automatically calculates the tapped density, Hausner flowability ratio and Carr compressibility index after each test and documents the results via the integrated protocol printer. The bulk density of powders is usually reported both as “freely settled” and “tapped”. The tapped density refers to the bulk density of the powder after a specified compaction process, usually involving tapping motion of the product cylinder. The instrument can be used to derive additional physical product characteristics such as flowability and compressibility. Together these behavioural characteristics are used to maintain and improve product quality during development as well as securing product consistency in quality assurance and in-process control. The standard test cylinder volume is 250ml. Sets to test smaller volumes of 100, 50, 25 and 10ml are available as well. As per USP the sample is initially tapped 10, 500, and 1250 times (strokes). The volume of the tapped sample is checked and another 1250 tap test follows. This procedure is repeated in case the volumes at 500 taps (V2) and 1250 taps (V3) differ by more than 2ml. This result is used to calculate the tapped density. The ability of the powder to settle is calculated as the difference between V1 and V2.