Tap Density Testers

• Data

  Mains Supply:	100 V to 240 V, 50/60 Hz
  Isolation Classification:	Class I - MUST BE EARTHED
  Power Consumption:	Less than 75 W
  Fuse:	2 x 2 A (Type T)
  Temperature:	15° C to 30° C
  Humidity:	10% to 85% (non-condensing)
  Waterproof Rating:	Not waterproof
  Tap Frequency:	50 TPM to 300 TPM
  Resolution:	1 TPM
  Accuracy:	±5 TPM
  Duration Range:	0 to 99 H: 59 M: 59 S
  Duration Accuracy:	±1 s or ±1 % (whichever is greater)
  Standards:	In accordance with Methods 1 and 2 of USP Chapter <616> and European Pharmacopoeia Chapter 2.9.34. Conforms to ASTM B527.
  Models:	JV 100i	JV 200i
  Eur. Ph and USP Test Methods Supported:	1, 2, 3	1*, 2, 3 - *Only one station should be used at a time for this test method
  Number of Test Stations:	1	2
  Unit Dimensions (w x d x h):	260 x 347 x 562 mm (with 250 mL cylinder)	260 x 347 x 562 mm (with 250 mL cylinders)
  Mass (kg):	12	13
  Maximum Noise Level @ 1 m:	88.5 dB(A) - 300 TPM, 3mm drop, 250mL Cylinder	84.6 dB(A) - 60 TPM, 3mm drop, 2 x Method III cups
  Maximum Sound Power Level:	96.5 dB(A)	92.6 dB(A)

The bulk density of a powder is expressed in terms of grams per mL by dividing the weight of a given "untapped" powder sample by its volume. It is important to ensure that no settlement occurs during preparation such that the density of the powder concerned is "as poured" and therefore includes the contribution made by the volume of the interparticulate void. Tap Density, on the other hand, is the density attained after "tamping down". This is normally measured using an instrument that lifts and the drops a measuring cylinder or similar vessel containing the powder through a fixed distance. The Tap Density in grams per mL can now be calculated by dividing the sample weight by the final tapped volume. 

Compressibility Index and Hausner Ratio - Measures of the ability of the powder to flow and its compressibility can now be given in the form of (a) the Hausner Ratio or (b) the Compressibility Index. In a free flowing powder, inter-particulate interaction is less significant and unsettled and tapped densities will be closer in value. In poorly flowing powders, the inverse is to be expected. It follows that the closer the Hausner ratio is to 1, the better the flow. Powders with poor flow generally have a ratio of greater than 1.25.
 

250mL Cylinder, power cable, platform, bayonet cap, cylinder clamp O-ring and noise reduction O-ring.