Latex
Stability Test Apparatus
Secomak (Formerly Klaxon Signals Ltd) are
the only worldwide manufacturers of the Klaxon Test Machine.
For quality and reliability please only accept the original product.
We manufacture and offer the well established range of latex testing machines
(known as Klaxon Test Machine). These are used for the determination of the mechanical
stability of natural or synthetic latex to the following standards:
- BS 6057 PART
3 SECTION 3.1 (ISO 35) and BS 6057 PART 3 SECTION 3.14 (ISO
2006).
- ASTM
Designation D1076 - 88 Standard Specification for Rubber
- Concentrated, Ammonia Preserved, Creamed and Centrifuged
Natural Latex.
- ASTM
Designation D1417 - 90 Standard Test Methods for Rubber Latices
- Synthetic
Latex Testing
Machine
(a.k.a the Klaxon Test Machine)
The latex rubber
stability test machine / apparatus tests the mechanical stability
of concentrated natural and synthetic latex rubber when subjected
to high speed mechanical stirring or mechanical shear.
Stirring is applied
to the latex rubber at a constant of 14,000 rpm until the end
point, or latex instability is reached.
The approach to
the end point is usually indicated by a drop in meniscus of
the latex, loss of turbulence and a change in the sound of
stirring action.
The end point is
determined by the first appearance of small pieces of coagulated
rubber.
This end point is
confirmed by the presence of an increased amount of coagulated
rubber after 15 seconds additional rotation.
The end point in
this case is the presence of approximately 1% of coagulum based
on total solids.
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The mechanical stability
value for a latex is expressed as the number of seconds elapsed
from the start of the test to the end point.
The Latex Rubber
Test Machine has a highly reliable series wound motor which
is electronically controlled and incorporates a feedback system
to accurately maintain the selected speed.
It comes complete
with visual confirmation in the form of colored LEDs and is
supported by a matt black aluminium bracket on a chrome plated
column.
The glass (synthetic)
or perspex (natural) beaker is retained on its aluminium table.
Height is adjustable.
The apparatus is
mounted on hard sponge rubber pads set into the black stove-enamelled
cast iron base.
The unit is fully
protected for use in tropical climates. Motor bearings are
sealed for life.
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