Brand: Erweka | Category: Scientific & Laboratory Equipment
The SBT 2 suppository hardness tester is built around an electrically heated chamber with an integrated sample holder and a set of interchangeable plastic inserts that hold suppositories of different sizes. Once the desired temperature is reached, hardness is tested using weights supplied as standard, which are placed on the device one after another until the suppository collapses under the load. Results are expressed as the total weight required to collapse the suppository.
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The SSP measures the melting point of suppository samples. It is made up of a graduated tube with an integrated glass test chamber, and the sample under test sits in a spiral shaped glass test basket inside that chamber. A water jacket surrounds the chamber, and the water within it can be heated with the optional EST 2 circulation heater.
The PM 30 measures the softening time of suppositories, which must disintegrate, dissolve or melt at body temperature for their active ingredients to be released. Erweka offer a version for EP method A and for method B: the PM 30 penetration tester is Apparatus A according to EP and the PM 3 is Apparatus B. Both were developed to give reproducible measurements of softening time at specified temperatures, and the design of the test device makes visual observation of melting characteristics straightforward. The unit consists of three test stations.
The ST 35 has three turnable test stations, each sitting in a four litre glass vessel with an optional magnetic stirrer, and a thermostatically heated water bath that Erweka describe as leak proof and double secured. Test stations turn automatically through 180 degrees at adjustable intervals. An integrated high performance flow through heating system holds accuracy to ± 0.2 °C and an internal temperature sensor drives the temperature display. Test time and set bath temperature are entered on membrane keys, with current test time and water temperature shown on clearly visible red LEDs, and an alarm can be selected to sound once the set test time has elapsed. The width of the unit lets the test stations be separated for easier cleaning.