Heidolph Heat-On Manual do Utilizador descarregar pdf (Página 8)

Important, Important,

Set-Up - continued

Heat-On Instructions

Beginning your experiment

In an ideal situation you should load your glassware into the block when the block is at

ambient (room temperature).

However in certain situations this may not be practical. In such circumstances you should

note:-

a. You can use cold water to cool the block down rapidly, but take care with blocks above

100˚C as steam is a potential hazard.

b. It is generally safe to insert flasks into blocks that are below 50˚C, but the flask should

be removed before the block temperature drops below the start temperature as there is

a small risk that the contraction of the block could crush the glass flask.

c. In all eventualities flasks should be removed at or above the temperature they were

originally inserted; i.e. in the case of a flask that is inserted at 80˚C, it should be

removed when or before the block cools to 80˚C.

Heat-On blocks are available from 10ml to 5 litres and are designed to locate directly

on to the stirring hotplate or adapter plate (see page 5)

1. Select the appropriate Heat-On block for your chosen flask. Each Heat-On block

is designed for a specific size of glassware and is identified accordingly with engraving

on the side of the block.

2. If using a 135mm hotplate, place adapter plate on hotplate.

3. Place block onto hotplate/adapter plate, ensuring block is sitting level.

4. If using a temperature probe rotate Heat-On block until probe

hole is located at the rear of your stirring hotplate.

Warning

Always refer to the manufacturers operating instructions for your stirring hotplate before using it with Heat-On, to be sure

of any limitations or safety restrictions.

Page

Important Note

Compatibility between Heat-On block and flask is essential for overall safety of this equipment (see page 10).

Heidolph-Heat-On Instructions 23-03-09:2nd draft amends 16-03-09 23/3/09 15:37 Page 8

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Heidolph Heat-On Manual do Utilizador Página 8