Sample Preparation Matters

HAG-HF Fusion Machine for Laboratory Samples

The HAG-HF prepares oxidic sample material for spectroscopic analysis. It uses a melting/ fusion process, which produces samples of exceptional analysis precision. This makes it possible to reproduce the results easily.

Pre-destined for use in labs

All components of the machine are accommodated in a compact machine stand. The integrated robot performs all transport functions within the machine, reliably and quietly. Therefore, the HAG-HF is ideal for use in labs.

High-frequency heating technology: Safe, reliable and economical

The high-frequency heating technology is safe and economical. The fusion process can be reliably and economically controlled.

Reliable sample processing around the clock

The machine is fully automatic, and even monitors itself during operation. Inferior castings are detected and discarded together with the holding ring. A new ring is inserted and the respective processing step is then repeated. Dirty crucibles and casting dishes are cleaned in the ultrasonic cleaning bath and then dried. This enables the HAG-HF to significantly reduce the times for sample processing and provides for trouble-free operation without the need for operating personnel. In automatic and magazine mode the machine works around the clock fully automatic and reliable processing.

Automatic computer process control

All processing procedures in the HAG-HF are controlled and monitored by a computer. The software regulates the temperature during the melting process and controls the cleaning of the crucibles and casting dishes, in addition to managing the samples. A graphic diagram on the monitor continuously provides information on the status of the melting process.

Flexible feeding of samples enables integration in lab automation process

The sample material can be transferred to the HAG-HF via transport belt, a pneumatic tube system or robots.

An example of lab automation:

1. Automatic receipt of pneumatic tube capsules with the sample material collected during operation

2. Fine grinding

3. Dosing of the material in special breakers, which are the transported to the HAG-HF

The automatic mode can be interrupted for the input of single or priority samples. These take priority over other samples. After they are processed, normal operation is automatically resumed.

Precise weighing for maximum analysis precision

The integrated scale is precise down to 0,1mg. It is protected against air currents and vibrations.

Simultaneous processing of two samples

Is a second heating system installed, two samples can be processed simultaneously (optional).

High-quality and high-purity castings

The crucibles are oscillated in a circular movement during the melting process. This guarantees thorough mixing of the molten mass. The molten material is poured into a preheated casting dish. Afterwards, it first cools to the ambient temperature. After solidifying, the casting dish is blown with precisely dosed compressed air from below until the sample is released from the crucible. The vacuum suction unit transfers only intact castings to the transport systems and the spectrometer. A sensor detects crystallised or broken castings and ensures that they are discarded.

To prevent contamination of the analysis surface during transport, the castings are not transferred directly to the transport system. With the side to be analysed facing downward, they are placed on the edges of a holding ring. This ensures that only intact castings make it to the analysis equipment.

Automation of cleaning process

Three crucibles or casting dishes can be cleaned simultaneously in the ultrasonic cleaning station. Each crucible and each casting dish runs through a separated cleaning cycle defined by parameters. The crucibles and casting dishes are then immediately available for further fusion processes. The cleaning fluid in the ultrasonic cleaning bath is automatically renewed at freely selectable intervals.

Reproducible analyses guaranteed

The HAG-HF fusion machine guarantees precise, reproducible analyses in the melting/ fusion process through:

• Comprehensive and complete automation

• Computerised process control

• Self-diagnosis

• Use of a precision scale protected against air currents and vibrations

• Elimination of inferior castings

• Transport without touching the transport system

• Individually programmable cleaning cycles

Original Website Content from http://www.datech-scientific.co.uk/products/fusion-machines/hag-hf/