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Article No.: A5007
Articlename: Discontinued: Autosampler KNAUER Optimas

Discontinued: Autosampler KNAUER Optimas

analytical HPLC autosampler standard

The Autosampler Knauer Optimas was developed for optimal automation of routine injections. With a choice of carousel trays, it provides sample vial flexibility and with the proven PASA™ injection concept, reliable and accurate sample handling is guaranteed. The autosampler also features three distinct injection modes, “full loop filling” (highest precision and reproducibility), “partial loop filling” (variable volumes, e.g. for dilution series) and “µl pickup” (loss-free injection of extremely small sample volumes), allowing the user to optimize sample usage. The autosampler is equipped with a sample tray containing 84 positions for 1.5 ml vials and 3 positions for 10 ml vials by default. Precolumn derivatization is supported. For all injection modes, sample injection with pressure-assisted sample aspiration (PASA™) is selectable. This technique reduces the risk of bubbles and provides excellent accuracy. The needle does not move to an extra port for injection, and thus prevents contamination. Complete integration into KNAUER’s OpenLAB® EE and ClarityChrom® chromatography data software make the autosampler easy to control. Alternatively, the autosampler can be used in standalone mode.

Technical Data

Sample injection

Sample capacity standard tray: for 84 vials x 1.5 ml + 3 vials x 10 ml/optional trays: for 96 vials x 1.5 ml or 24 vials x 10 ml
Sample loop 100 μl standard; 10 ml for preparative option
Dispenser syringe 250 μl standard; 1 000 μl optional; 2500 μl for preparative option
Headspace pressure built-in compressor
Switching time inj. valve < 100 ms
Piercing needle precision ± 0.6 mm
Sample tray cooling none
Vial detection missing vial detection by sensor
Wash solvent external wash solvent bottle
Wetted materials stainless steel (SS316), PTFE, Tefzel®, Vespel®, glass, Teflon®. For biocompatible version: PEEK

Analytical performance

Injection modes full loop, partial loopfill and μl-pickup mode; PASA™ (pressure-assisted sample aspiration)
Injection volumes 1– 5 000 μl (preparative option: 10 000 μl when software-controlled)
Injection precision
full loop injections ≤ 0.3 % RSD
Partial loopfill

≤ 0.5 % (prep. ≤ 1.0 %) RSD

injection volume> 10 μl


≤ 1.0 % RSD

injection volume> 10 μl

Sample carryover < 0.05 % (prep. < 0.1 %) with programmable needle wash
Injections per vial max. 9 injections (unlimited when controlled by software; in sequence mode: max. 9 injections)
Injection cycle time 73 sec for 10 μl partial loopfill including 250 μl needle wash
Analysis time max. 9 h, 59 min, 59 s


Inputs next injection, freeze, stop (all TTL)
Outputs 2 inject marker (relay, TTL), 2 auxiliary (relay), alarm (relay)
Control RS-232, standalone


Power supply 115 – 230 Volt AC +10 % / -22 %; 50 – 60 Hz; 200 VA
Dimensions 300 mm x 500 mm x 340 mm (W x H x D)
Weight 19 kg

Documents and more information

Certified Quality 

KNAUER is known for the quality of its products and has been certified several times. We produce high-tech laboratory instruments for research, routine analysis and production for 59 years.
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In addition, we have extended documentation about all our products, including CE Declarations of Conformity.
See all CE Declarations of conformity

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