Automatic Friability Tester with Tablet Counter

What is the Automatic Friability Tester with Tablet Counter?

An automatic friability tester with tablet counter runs the drum test and then counts tablets and checks for breakage with optical sensors. It is chosen to reduce manual handling in laboratories where tablet integrity must be documented for each run.

Overview

This variant adds an optical or mass-based tablet counter to a standard drum tester. After the drum stops, the operator empties the tablets into a collection tray, and sensors count the number of intact tablets and compare it to the starting number. A shortfall signals a chipped or split tablet that may otherwise be overlooked during manual inspection. The controller records the tablet count, revolutions, run time and operator ID, and can trigger a reminder to dedust the sample. Some models include a sieve or vibrating tray for dust removal. The speed and revolution count are digitally controlled and logged, which helps data-integrity practice. Added complexity raises calibration effort, because sensors and counters also need periodic verification against a known sample.

How does it work?

A friability tester holds a transparent drum, usually 287 mm in diameter, on a horizontal axis and rotates it at 25 rpm. A curved radial baffle inside the drum lifts the tablets and drops them from a height of about 156 mm on every turn, so each tablet falls repeatedly onto the drum wall and onto other tablets. A pre-weighed sample, normally 6.5 g or 10 tablets, is run for 100 revolutions (4 minutes). Loose dust is removed and the tablets are weighed again. Friability is the percentage loss of mass, and the pharmacopoeias accept a value not above 1.0 percent for most products. The main components are the drum, drive motor, revolution counter and timer, and a speed control. Advanced models add automatic tablet counting, dust removal and an integrated balance.

What are the key features?

• Optical tablet counter compares intact tablets with the starting number
• Automatic run log with tablet count, revolutions, time and operator
• Integrated dedusting tray or sieve to standardize dust removal
• Digitally controlled 25 rpm drive with revolution stop
• Alarm for missing or broken tablets after the run
• USB or RS-232 output for record transfer

What are the technical specifications?

A typical automatic friability tester with tablet counter configuration offers number of drums of 1 or 2, drum inner diameter of approx. 287 mm, rotation speed of 25 ± 1 rpm, revolution preset range of 1–9999 rev, tablet counting range of 1–50 tablets and counting method of Optical sensor. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Automatic Friability Tester with Tablet Counter is used in high-throughput QC release testing, documentation of tablet integrity, contract testing laboratories and regulated GMP laboratories. Across the wider Friability Testers class, laboratories also deploy it for pharmaceutical QC release testing, tablet formulation development and in-process control during compression.

Which standards and certifications apply?

Relevant standards and methods include USP <1216>, Ph. Eur. 2.9.7, JP 6.10 and IEC 61010-1. Certification candidates for this model are CE and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Place the tester on a level, vibration-free bench, because vibration and tilt change the tablet fall pattern. Verify drum speed and revolution count at installation and at defined intervals using a calibrated tachometer or stopwatch. Inspect the drum and baffle for scratches, cracks and residue, and clean with a non-abrasive cloth to avoid altering the surface. Keep tablets dedusted with a soft brush and weigh on a balance of at least 0.1 mg readability. Ambient humidity influences hygroscopic tablets, so record the conditions. For regulated laboratories, document the installation, operational and performance qualification and, where software is used, evidence of audit trails and access control.

How do I select the right Automatic Friability Tester with Tablet Counter?

Select this variant when breakage detection and run documentation matter or the laboratory wants less manual handling. It costs more and needs additional sensor checks. In an RFQ, state tablet size range, counting method, data output format, number of drums and whether dust removal must be integrated.

How does it compare with other Friability Testers variants?

The decisive choice is throughput versus automation. A single-drum unit suits low-volume QC laboratories, while a dual-drum unit tests two samples in parallel, which also supports duplicate testing for development work. Check that drum dimensions and speed match the pharmacopoeial specification of the target market, and that the speed is verified by a revolution counter and not just a dial setting. If the laboratory handles many batches a day, automatic counting, dust removal and balance integration reduce handling errors and operator time. For regulated sites, confirm that electronic records, audit trails and user access levels are available. Also consider drum material, because antistatic or polished acrylic drums reduce dust adhesion on some granulations. Finally, confirm the tester can accept large or oddly shaped tablets if the portfolio contains them.