Can 300–1200 μL/rev be read as a flow rate?

No. It is displacement per revolution; flow also depends on speed. For example, 500 μL/rev × 120 rpm gives a nominal average flow of 60 mL/min. Calibrate the actual flow with the liquid and backpressure in use. Average flow does not imply pulse-free delivery.

Can RPL-P15 prepare a two-liquid mixture on its own?

It is a single-head pump for metering or dispensing one liquid. Proportional preparation of two liquids requires another fluid path and suitable control. For fixed concentrate-to-diluent ratios of 1:9 or 1:19, a DRPL dual-head configuration can be assessed separately.

Which materials and ports are shown for RPL-P15?

The shown configuration uses a polyvinylidene fluoride (PVDF) head and plug, an aluminium oxide (Al₂O₃) ceramic set, a G1/8 working-fluid port and a 1/4-28 UNF-2B wash-fluid port. Check the reagent and cleaning liquid against all wetted components, not just the pump head. Confirm the drive, mounting and interfaces for the supplied configuration.

How should accuracy, pressure and service-life values be used?

Confirm the definitions and test conditions, including liquid, temperature, displacement, speed and backpressure. A pressure rating is not automatically the permitted operating backpressure, and cycle life is not a guarantee under every condition. Valveless construction does not mean that a complete instrument needs no switching or shutoff valves.

FOREACH RPL-P15 valveless metering pump, front three-quarter view

RPL-P15 Ceramic Piston Metering Pump for Reagent Filling in Life Sciences

Q: How does RPL-P15 differ from RPL-P6.35?

Their displacement ranges are 300–1200 μL/rev and 50–300 μL/rev respectively. RPL-P15 is an option for larger-volume filling and liquid supply. Compare the target fill volume, delivery time and any small-dose requirements, rather than choosing by flow alone.

RPL-P15 is a valveless ceramic piston metering pump for larger dispense volumes and higher liquid delivery requirements. Mechanically adjustable displacement of 300–1200 μL/rev and a speed range of 5–300 rpm provide a flow range of 1.5–360 mL/min. Typical tasks include diagnostic reagent bottle filling, buffer dispensing, reservoir replenishment and metered supply to analytical instruments.

The ceramic piston rotates and reciprocates to draw in liquid, discharge it and switch between ports without separate check valves. A larger displacement reduces the number of revolutions needed for a given fill. For example, 10 revolutions at 1000 μL/rev give a calculated fill volume of 10 mL. Different fill volumes can be accommodated by changing revolution count or displacement, followed by output calibration at the required filling cycle.

The configuration shown combines a polyvinylidene fluoride (PVDF) pump head and plugs with an aluminium oxide (Al₂O₃) ceramic piston and cylinder set. G1/8 process ports connect the working-fluid circuit, while 1/4-28 UNF-2B rinse ports allow flushing around the piston to help limit residue buildup and crystallization. The pump measures 78 × 78 × 160 mm and weighs 900 g.

Typical Applications:

Reagent filling systems: volumetric bottle filling, Laboratory preparation workstations: premixed buffer dispensing and reservoir replenishment, Analytical instrument supply modules: metered liquid delivery

Model:Select a configuration

Product type	RPL Single-Head Valveless Metering Pump
Displacement per revolution	300–1200 μL/rev
Speed	5–300 rpm
Accuracy	<2%
Repeatability	<0.5%
Pressure rating	Max 150 kPa
Service life	20,000,000 cycles
Pump head material	polyvinylidene fluoride (PVDF)
Plug material	polyvinylidene fluoride (PVDF)
Ceramic set	aluminium oxide (Al₂O₃)
Working-fluid port	G1/8
Wash-fluid port	1/4-28 UNF-2B
Overall dimensions	78 × 78 × 160 mm
Weight	900 g
Configuration	Custom configuration

Flow ranges are calculated from displacement per revolution and speed. Calibrate actual delivery with the intended liquid, backpressure and fluid circuit.

Displacement per revolution is not the dose or minimum reliable volume; verify actual output with the drive, liquid and circuit.

Accuracy, repeatability and life require the applicable test conditions. Confirm permitted working backpressure separately from the pressure rating.

Diagnostic reagent production: volumetric bottle filling

In reagent production or laboratory packaging, liquid travels from a supply vessel through the pump and filling tip into each bottle. RPL-P15 can be assessed as a reagent filling pump or volumetric dispensing pump. Balance per-container volume with cycle time; different displacement settings require different revolution counts for the same target fill.

Calculation example: a nominal 5 mL fill at 1000 μL/rev requires 5 complete revolutions. At a constant 150 rpm, pump running time is theoretically 2 seconds. Container indexing, acceleration, stopping and tip motion are additional; this is not a production-line throughput claim. Calibrate the actual volume delivered at the outlet.

Before increasing speed, check inlet supply, tip restriction and droplet release. For foaming liquids, assess dispensing height and motion as well. Measure both consecutive fills and the first fill after a pause to evaluate the complete station rather than the pump alone.

Laboratory preparation: buffer dispensing and replenishment

A pump distributing premixed buffer among containers may be called a buffer dispensing pump; one refilling an intermediate reservoir may be called a replenishment pump. Neither task is the same as preparing buffer from two liquids. Single-head RPL-P15 does not independently control a concentrate-to-diluent ratio.

For repeated dispensing, match volume, displacement and operating cycles. For reservoir replenishment, level measurement or an instrument command determines start and stop. Level sensing, dry-run protection and overflow prevention belong to the system design and cannot be assumed to be included with the pump.

Include a compatible shutdown rinse when using salt-containing buffers to limit residue drying and crystallization around the piston. The G1/8 working-fluid port and 1/4-28 UNF-2B wash-fluid port serve different circuits. Connect them according to the configuration drawing and check for air introduced after replenishment.

Analytical instrument supply: continuous metered delivery

When an instrument needs liquid over an extended period, RPL-P15 can be assessed as a liquid metering pump or quantitative supply pump. Unlike per-container filling, the primary inputs are average flow, run duration and the downstream process tolerance for flow fluctuations.

Estimate nominal average flow as displacement per revolution multiplied by speed. Calculation example: 500 μL/rev × 120 rpm = 60000 μL/min, or 60 mL/min. This is an average value, not constant instantaneous flow or a substitute for measurement with the actual liquid and backpressure.

Measure output collected over a defined interval at the actual outlet resistance, and check the effect of pulsation on the downstream process. Adding a mixer or other restriction requires renewed backpressure and inlet-supply checks. Valveless construction does not by itself guarantee pulseless flow or unlimited continuous operation.

Define the fluidic task and configuration

Provide liquid composition, dose volume or continuous flow, allowable delivery time, daily run duration, inlet conditions, outlet backpressure and drive requirements. Use these inputs to size displacement and timing, then verify output in the actual circuit. Application directions are not claims of validation in every listed instrument.

Preview DrawingView the technical drawing for RPL-P15.

Download RPL-P6.35 / RPL-P15 (English, 001 / 2025-07) PDF

Preview RPL-P6.35 / RPL-P15 (English, 001 / 2025-07) Datasheet

Frequently Asked Questions

Their displacement ranges are 300–1200 μL/rev and 50–300 μL/rev respectively. RPL-P15 is an option for larger-volume filling and liquid supply. Compare the target fill volume, delivery time and any small-dose requirements, rather than choosing by flow alone.

Confirm the RPL-P15 configuration for your instrument

Submit requirements

Product type

RPL Single-Head Valveless Metering Pump

Displacement per revolution

300–1200 μL/rev

Speed

5–300 rpm

Accuracy

<2%

Repeatability

<0.5%

Pressure rating

Max 150 kPa

Service life

20,000,000 cycles

Pump head material

polyvinylidene fluoride (PVDF)

Plug material

polyvinylidene fluoride (PVDF)

Ceramic set

aluminium oxide (Al₂O₃)

Working-fluid port

G1/8

Wash-fluid port

1/4-28 UNF-2B

Overall dimensions

78 × 78 × 160 mm

Weight

900 g

Configuration

Custom configuration

Confirm the RPL-P15 configuration for your instrument

RPL-P15 Ceramic Piston Metering Pump for Reagent Filling in Life Sciences

Typical applications

Diagnostic reagent production: volumetric bottle filling

Laboratory preparation: buffer dispensing and replenishment

Analytical instrument supply: continuous metered delivery

Define the fluidic task and configuration

Frequently Asked Questions

Confirm the RPL-P15 configuration for your instrument

RPL-P15 Ceramic Piston Metering Pump for Reagent Filling in Life Sciences

Typical applications

Diagnostic reagent production: volumetric bottle filling

Laboratory preparation: buffer dispensing and replenishment

Analytical instrument supply: continuous metered delivery

Define the fluidic task and configuration

Frequently Asked Questions

Confirm the RPL-P15 configuration for your instrument