Melting Time Tester

Melting Time Tester

Special dosage forms such as suppositories and other lipid-based solid forms don't disintegrate the way tablets do — they melt. Our RBY-N Intelligent Melting Time Tester evaluates the melting behavior of these solid dosage forms.

Key Features

  • Evaluates melting time and thermal behavior of suppositories and similar dosage forms
  • Supports pharmaceutical R&D and quality control workflows

Applications

  • Suppository and lipid-based solid dosage form quality control
  • R&D characterization of thermal/melting behavior

Explore the full lineup below to find the right solution for your lab. For quotation or technical support, contact our team.

How to choose a suppository melting time tester

Suppositories are tested for melting (softening) time rather than tablet-style disintegration. The RBY-N from Huanghai Pharmaceutical Instruments (Shanghai, since 1978) is a dedicated suppository instrument: 3 test stations, a 5,000 ml glass beaker, a holder that turns 180° on a programmable 1–30 min cycle, and temperature control to ≤±0.3 °C. It follows the ChP 0922 melting-time method, with an apparatus design equivalent to Ph. Eur. 2.9.2.

Model comparison

Model Stations Cycle Temperature Data and access control
RBY-N 3, tested simultaneously 180° turn every 1–30 min (programmable); test time up to 999 h Room temperature to 45 °C, 0.1 °C resolution, ≤±0.3 °C 3-level users, system log (audit trail), USB, RS232 printer

How to choose

  • Suppositories and pessaries need a dedicated melting time tester such as the RBY-N; hardness and disintegration testers are not designed for them.
  • Throughput: the 3 stations run simultaneously, matching the three units tested per determination.
  • Start of shift: the 24-hour reservation timer heats the water before the operator arrives.
  • Regulated QC: user login with three permission levels, a system log of operator, time and action, sample information management and USB export.

Pharmacopoeia and compliance

ChP 0922 (melting time of suppositories and pessaries); apparatus design equivalent to Ph. Eur. 2.9.2 / 2.9.22. USP has no dedicated suppository melting apparatus. IQ/OQ documentation templates are provided.

Frequently asked questions

Why test melting time instead of disintegration for suppositories?
Suppositories release the drug by melting or dissolving at body temperature, so pharmacopoeias test the time to melt, soften or dissolve rather than tablet-style disintegration.

Which pharmacopoeia methods does the RBY-N follow?
ChP 0922. The apparatus design is equivalent to Ph. Eur. 2.9.2 / 2.9.22.

How many suppositories can be tested at once?
Three, one in each station, tested simultaneously.

What temperature range does the RBY-N cover?
Room temperature to 45 °C with 0.1 °C resolution and ≤±0.3 °C accuracy, which covers the 37 °C test condition.

Does the RBY-N have user management?
Yes. It has user login with Admin / Power User / User levels, a system log (operator, date-time, action), data query, USB export and an RS232 printer.

Related guides: Suppository melting time tester buying guide · RBY-N and suppository testing standards · Disintegration testers

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