Stacker LB 931 Microplate Stacker

Berthold Technologies
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LB 931

The Microplate Stacker can be used with the multi-detection readers Mithras and TriStar as well as the microplate fluorometer Twinkle.

A barcode reader provides positive plate identification making the system a true walk-away solution for microplate reading.

Various Plate Formats

The stacker can be operated with 24, 96, 384 and 1536 well plates of any height.


Exchangeable stacks can be loaded with either 25 or 50 microplates respectively.

Teachable Smart Gripping

The stacking height of the plate can be teached via software. The griping mechanism works in an active way ensuring that the gap between stacked plates is always found.


Once the microplates are read the stack of plates can be stacked back into the infeed stack and measured again as amyn times as needed enabling e.g. long-term monitoring of gene expression.

Plate Capacity

25 microplates (regular stack)

50 microplates (tall stack)

Microplate Formats

24, 96, 384 and 1536 well

outer dimensions: 86 x 128 mm

Supported Instruments

Mithras LB 940 multimode microplate reader

TriStar LB 941 multimode microplate reader

Twinkle LB 970 microplate fluorometer

Re-Stackingup to 7 days unattended operation
BarcodesCode 39, Interleaved 2 of 5, Codabar, EAN 128, UPC, EAN 8/13

25 plate stack:
500 x 700 x 610 mm (w x d x h)

50 plate stack:
500 x 700 x 960 mm (w x d x h)

OSWin XP, Win Vista, Win 7
RegulationsCE, UL, CSA

LB 913 Operating Manual (lb931_stacker_45880ba2_rev02_2006_08_01.pdf, 2,211 Kb) [Download]