Microplate reagent dispensers: how can dispensing into 96/384-well plates be accelerated while minimising dead volume?

The microplate reagent reservoirs — also known as microplate reservoirs — streamline every move at the bench. Designed for use with multichannel and electronic pipettes, they stabilise your volumes, cut dead volume and speed up dispensing across 96/384-well plates. Sterile or reusable, with low-retention surfaces and partitioned options, they safeguard your ELISA, PCR and staining set-ups while reducing consumption of expensive reagents. A simple accessory that makes a real difference to quality, throughput and costs.

What types of microplate reagent dispensers are available?

A reagent reservoir is a stable, calibrated channel for aspirating and dispensing volumes with a multichannel pipette. Its shape (V-bottom or pyramidal) minimises dead volume and promotes homogeneity. There are three main families.

• Disposable PS (polystyrene): economical, often sterile (gamma-irradiated), RNase/DNase-free, single-use to prevent contamination in immunoassays, cell culture and PCR.
• Reusable PP (polypropylene): robust, autoclavable, more chemically resistant (buffers, mild detergents). Ideal for lowering plastic footprint and recurring costs.
• Compartmented or long trough models: with 1, 2 or 3 channels, compatible with 8/12-channel pipettes, useful for sequencing multiple reagents or covering 96/384 wells. Lids, anti-drip pouring rims and low-retention inserts improve safety and recovery.

Key selection criteria: chemical compatibility (PS vs PP), format (SBS for automation), required sterility, usable volume (25–300 mL), minimal dead volume, low-binding surface, benchtop stability, presence of graduations, packaging (individually wrapped/racked) and environmental impact (reusable or replaceable inserts).

Type	Principle	Applications
Disposable sterile PS	Single-use, low dead volume, smooth surface	ELISA, PCR/qPCR, cell culture, IVD
Reusable PP	Autoclavable, robust, sometimes low-binding inserts	Pipetting routines, buffers, waste reduction
Compartmented/long trough	1–3 channels, compatible with 8/12 channels and 96/384 wells	Multiplex, screening, alternating reagents

Where are reagent dispensers used?

• Life sciences: preparation of ELISA plates, q PCR, staining, washes and cell culture media.
• Pharma/biotech: screening on 96/384-well plates, enzymatic assays, quality control.
• Diagnostics/IVD: standardised reagent dispensing onto kits and microplates, improved repeatability.
• Agri-food: analyses of allergens, mycotoxins and residues; rapid multiwell tests.
• Environment: water analysis kits, spectro-/fluorometric plate readings.
• Chemistry/cosmetics: batch preparations, colourimetric titrations, stability testing.
• Automation: SBS-format reservoirs for pipetting platforms.

Available reagent dispensers and reservoirs

Frequently asked questions about reagent dispensers (pipetting)

How to choose between disposable PS and reusable PP?
Sterile PS minimises contamination for ELISA/PCR. Autoclavable PP withstands buffers better and cuts waste over repeated use.

What is low dead volume and why does it matter?
It is the unrecoverable volume at the bottom. A V-shaped/pyramidal base reduces it, saving costly reagents and improving aspiration accuracy.

Are low-binding surfaces useful for proteins?
Yes, a low retention surface limits protein/DNA adsorption, stabilises concentrations and improves reproducibility.

Can I use organic solvents?
Prefer PP for superior chemical resistance. PS can craze or crack with some solvents. Check reagent compatibility.

Sterile or non-sterile: which criteria?
For cell culture and PCR, choose sterile, RNase/DNase-free, often pyrogen-free. For routine chemistry, non-sterile is sufficient.

384-well compatibility?
Choose long-trough/narrow reservoirs suited to 16-channel pipettes or robots. The SBS footprint simplifies integration.

How to reduce evaporation during a series?
Use lids, work in smaller batches and minimise time exposed to air to preserve reagent concentration.

Care of reusable models?
Rinse immediately, mild detergent, deionised water, then autoclave if compatible. Inspect surface condition before reuse.