DESCRIPTION

SPECIFICATIONS

ACCESSORIES

INSTALLATION

OPERATING INSTRUCTIONS

GUARANTEE

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The LAMBDA DOSER is a unique programmable pump for free-flowing solid substances. It allows the automatic or continuous addition of powders, powdery and crystalline substances without a spoon.

The LAMBDA DOSER, composed of a dosing unit coupled to a stepping motor controlled by modern electronics, allows constant and reproducible dosing even of solids which do not flow well. A remote controller allows the doser to be used in automatically controlled reactions.

This instrument will modernize your laboratory.

In many laboratories powdery and crystalline reagents are still added into reaction vessels spoon by spoon. This is against the safety rules, such addition is not reproducible and there is a risk of contamination of persons by toxic substances. Since the DOSER is air tight the substances are not affected by water vapour, oxygen or other contamination.

Organizations using the old spoon by spoon method are not safety and GLP conform.


LAMBDA doser adds powders and cristalline reactants safely and reproducibly

It can be applied for reagent and powder dosing as an automatic powder funnel (powder feeder) for the majority of free flowing granular solids and relevant powder distribution tasks on the laboratory level.

Properties of the LAMBDA powder Doser

Capacity

About 200 ml (corresponding to 250 g NaCl, 200 g NaHCO₃, 150 g sucrose). This capacity is optimal for most laboratory applications.

Rate of addition

From about 50 mg to 50 g NaCl/ min. The rate can be selected digitally in 1000 steps. The digital setting allows a good reproducibility of rate adjustments.

Programmable

30 pairs of dosing speeds and dosing times can be easily programmed.

Safety

With the DOSER the additions of powdery chemicals become reproducible, safe and conform to modern safety and quality rules (GLP), as it is required for the laboratory manipulation of chemicals. The hermetic construction of the DOSER allows safe handling of dangerous and toxic solid substances.

Assembling and cleaning

The powder dosing apparatus has been constructed for easy assembly and cleaning.

The powder doser can be coupled to all common glass apparatus having standardized grounded fittings NS 29/32 or carrying threaded connectors SVL. All parts coming into contact with chemicals are made of resistent materials.

Small dimensions

Special attention was paid to minimize the dimensions of all parts of the powder doser. The powder doser can be adapted easily to complex laboratory installations.

Robust

The construction in combination with high quality materials assure a long life of the powder doser.

Controlled atmosphere

Several seals make the DOSER air-tight and it can be used with a slight over- or under-pressure. The glass vessel can also be flushed by a neutral gas, if it is necessary for a given reaction.

Economical

Automatic powder dosage frees technicians for other work. Due to better reproducibility and elimination of errors the number of experiments can be reduced. Excellent priceto quality ratio.

Remote control

The speed of addition can be remotely controlled over the whole range by applying a voltage of 0 to 10 V and switch-ON/OFF is controlled through an external contact or 12 V signal. The RS-485 or RS-232 interface (optional) allows for enhanced PC control (variable flow rates, dosing gradients, etc.).

Quantification of the dosed substances

The DOSER can be connected to the LAMBDA INTEGRATOR, which allows the quantification of the amount of powder added as a function of time. This provides important information on the processes or reactions, e.g. when the DOSER is controlled by a controller (pH-stat, thermostat, etc.)

Guarantee

2 years

Technical data

Control unit:	13 × 7 × 6 cm (L × W × D)
Powder Dosing part:	30 × 12 × 5 cm (L × W × D)
Power supply:	12 VDC, 5 W by mains adaptor
Safety:	Meets CE and IEC 1010/1 norms for laboratory instruments
Remote control:	0-10 VDC (dosing speed control), 3-12 VDC (ON/OFF control); RS-485 or 232 (optional)