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prepASH® Thermogravimetric Analyzer

Maximize Time & Accuracy

The prepASH® thermogravimetric analyzer (TGA) automatically measures moisture, ash and loss on ignition at reduced workload and costs. Combining furnace, high precision balance and automation, the prepASH Series enables a huge reduction in workload through the simultaneous TGA analysis of moisture, ash and volatiles content.

Space for 29, 19 or 12 samples
Readability of 0.0001 g and capacity 120 g
Fully automatic thermo-gravimetric analysis operating at temperatures of up to 1000 °C
Touch screen controls
Complies with ASTM D7582

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Quality Management Protocol

The prepASH thermogravimetric analyzers work autonomously as stand-alone-units and offer full control and documentation. They display the weight loss of each individual sample during the program steps and display these on the colour Touch Screen display. Beyond that all models can be connected though Ethernet interface to the network and be remotely monitored by means of prepDATA software on the PC. The results are calculated as losses or residuals in respect of weighing-in or pre-interval values (e.g. dry mass). The user may choose between %, ‰, g/kg, g.

User identification with password at different access levels
Hardware/Software and adjusting information; printed on each report
Audit Trail

Precisa Ash Thermogravimetric Analyzer Open

Fully Automated

The TGA thermogravimetric analyzer works completely autonomously once it is loaded and started. This offers the user a completely new time management option as the thermogravimetric analysis can be run at different time periods which could not previously be used (e.g. at night). By the permanent recording of the measurements during the entire process and the automatic storage of the final results, the TGA test results are available at any time.

Precisa prepASH thermogravimetric analyzer, full picture - open

Dry Weight and Ash

One of the most important parameters in thermogravimetric analysis is the testing of many materials and substances, and the determination of dry weight and ash. This is often time-consuming and has a high error potential when performed in the classic way with drying/muffle oven and precision balance. This can be avoided using Precisa’s TGA thermogravimetric analyzer. The Self Calibration System (SCS) developed by Precisa enables automatic adjustment / calibration of the balance, so it is always accurate. The function can be set to be temperature and/or time controlled, so that the user can always expect maximum measuring accuracy. This option is often used in regulated environments (GLP).

Sulfated Ash as per Pharmacopoeia

Ashing test procedures performed on pharmaceutical, polymer, and food samples frequently involve the use of sulfuric acid (H2SO4) . Hot sulfuric acid vapor released during these procedures is both hazardous to analysts and corrosive to equipment. In addition to these complications, sulfated ashing procedures are typically labor-intensive and time consuming, requiring manual fuming of acid from crucibles. In prepASH® sulfated ashing system, sulfuric acid fumes released from crucibles inside the furnace chamber are continuously removed, through a quartz tube connected in to a water-cooled condenser with receiving vessel and to the acid scrubber module.