What output is shown for DRPL-0109?

The shown configuration is 100 μL concentrate plus 900 μL diluent, nominally 1 mL combined. Confirm batch output against the actual drive and operating sequence; these quantities are not a validated minimum under all conditions.

Does proportional pumping also guarantee mixing?

No. The pump controls the relationship between two delivered liquids. Junctions, mixing and storage determine downstream uniformity. Measure both path outputs independently and test the prepared liquid; combined volume alone cannot confirm ratio or concentration.

Can speed adjustment change 1:9 to 1:19?

Not by overall speed adjustment alone. If both outputs change by the same factor, their ratio stays unchanged. A new ratio requires confirmation of the pump-head and displacement configuration, not simply a different speed setting.

How are the two paths specified?

Working-fluid ports A and B are shown as 1/4-28 UNF-2B and G1/8; both wash-fluid ports are 1/4-28 UNF-2B. Verify each path's wetted materials from the configuration specification rather than borrowing the materials of an RPL model. Confirm operating backpressure separately from the pressure rating.

FOREACH DRPL-0109 dual-head valveless metering pump for IVD reagent dilution

DRPL-0109 Dual-Head Ceramic Piston Pump for IVD Reagent Dilution

Q: What dilution factor does 1:9 represent?

It denotes concentrate-to-diluent volume ratio: one part plus 9 parts. With additive volumes, no target solute in the diluent and no reaction, the final volume is 10 parts and concentration is 1/10 of the concentrate value. Do not confuse liquid ratio with final dilution factor.

DRPL-0109 is a dual-head valveless ceramic piston metering pump for delivering concentrate and diluent at a 1:9 volumetric ratio. The configuration shown delivers 100 μL + 900 μL per revolution. At 60–300 rpm, the combined flow range is 60–300 mL/min. Applications include on-instrument dilution of concentrated reagents and wash solutions, fixed-ratio buffer preparation, and proportional dosing in reagent production.

A common drive operates both pump heads, avoiding the need to synchronize two independent pump drives. Each ceramic piston rotates and reciprocates to meter its liquid. Speed changes the combined delivery rate; the configured displacements define the nominal volume ratio. One part concentrate plus nine parts diluent can be used to prepare a 1× working solution from a compatible 10× formulation, with mixing provided downstream.

Channel A has 1/4-28 UNF-2B process ports; channel B has G1/8 process ports supplied with metal push-in fittings as standard. Both channels have 1/4-28 UNF-2B rinse connections. The assembly measures 180 × 83.7 × 75 mm. Connect the outlets to downstream combining and mixing components, calibrate each channel separately, then verify the concentration and uniformity of the prepared solution.

Typical Applications:

Automated analyzers: inline reagent dilution at a 1:9 concentrate-to-diluent ratio, Laboratory preparation equipment: fixed-ratio buffer preparation, Reagent production stations: proportional batch dosing of two liquids

Model:DRPL-0109-0100

Concentrate-to-diluent volume ratio	1:9
Concentrate parts	1
Diluent parts	9
Concentrate volume (μL)	100
Diluent volume (μL)	900
Combined volume (mL)	1
Speed	60–300 rpm
Minimum flow QMin (mL/min)	60
Maximum flow QMax (mL/min)	300
Reagent A working-fluid port	1/4-28 UNF-2B
Reagent B working-fluid port	G1/8 (metal push-in fitting by default)
Reagent A wash-fluid port	1/4-28 UNF-2B
Reagent B wash-fluid port	1/4-28 UNF-2B
Reagent A pressure rating	Max 150 kPa
Reagent B pressure rating	Max 150 kPa
Dimensions (mm)	180 × 83.7 × 75 mm
Weight	1536 g
Accuracy	<2%
Repeatability	<0.5%
Service life	20,000,000 cycles

Combined flow is calculated from the total displacement of both heads and speed. Verify each channel's output and the volume ratio under the intended liquid and pressure conditions.

The ratio is concentrate volume to diluent volume. Verify both path outputs separately; total volume alone does not establish mixture concentration.

Proportional delivery is separate from mixing. Confirm wetted materials, working backpressure and performance conditions for each path.

Automated analyzers: on-instrument concentrate dilution

One path draws concentrate and the other draws diluent; the outputs meet and mix before reaching the working-solution reservoir. For this task, DRPL-0109 may be specified as a concentrate dilution pump or reagent dilution pump. Proportional pumping supplies the liquids, while downstream mixing determines uniformity.

Ratio calculation: 1:9 means one part concentrate plus 9 parts diluent. Assuming additive volumes, no target solute in the diluent and no reaction, the combined volume is 10 times the concentrate volume and the target-solute concentration is 1/10 of its original value. The shown 100 μL + 900 μL configuration gives a nominal 1 mL. Confirm concentration from measured outputs and prepared-liquid testing.

Prime and remove air from both paths before assessing the liquid entering the mixer, especially after startup or liquid changes. A depleted supply or bubbles in one path can cause a concentration error even if combined volume appears acceptable. Measure each path independently before assessing the mixed working solution.

Laboratory and reagent preparation: fixed-ratio buffer dilution

In laboratory preparation equipment, a component combining concentrate and diluent may be specified as a buffer preparation pump or proportioning pump. Choose DRPL-0109 because the formulation requires a 1:9 volume ratio, not merely because the application uses the word buffer.

Calculation example: a nominal 100 mL batch at 1:9 requires 10 mL concentrate and 90 mL diluent. This is formulation arithmetic, not a batch-accuracy guarantee. Check the prepared liquid against the formulation requirements for ionic strength, acidity and dissolution state.

Correct proportions do not automatically ensure uniform mixing. Select the downstream junction, mixer and reservoir for batch volume, delivery timing and residence time. Test mixtures that may precipitate or foam. A ceramic piston does not establish compatibility of every component in both liquid paths.

Reagent production: proportional batch dosing

When two liquids enter a preparation vessel in a fixed relationship, DRPL-0109 may be described as a proportioning pump or dual-channel metering pump. Specify ratio, total batch volume and allowable preparation time. Filling the prepared liquid into individual bottles is a separate downstream task, not an integrated function implied by the dual-head pump.

Increasing or decreasing both path outputs by the same factor does not change their ratio. Overall speed adjustment therefore cannot turn a 1:9 configuration into 1:19. A different formulation requires reassessment of pump-head and displacement configuration. At batch startup and shutdown, consider path volumes, arrival times at the mixer and residual liquid.

The shown working-fluid ports are 1/4-28 UNF-2B for reagent A and G1/8 for reagent B; both wash-fluid ports are 1/4-28 UNF-2B. Confirm the A/B-to-liquid mapping from the configuration drawing rather than port size alone. Check the pressure and supply status of both paths separately.

Define the fluidic task and configuration

Provide both liquids, target volume ratio, batch volume or total flow, preparation time, both inlet conditions and backpressures, and the downstream mixing arrangement. Assess proportional delivery, instrument control and mixture uniformity separately; listed applications are selection directions, not universal validation claims.

Preview DrawingView the technical drawing for DRPL-0109.

Datasheet not yet available

The datasheet for this product has not been uploaded yet.

Frequently Asked Questions

It denotes concentrate-to-diluent volume ratio: one part plus 9 parts. With additive volumes, no target solute in the diluent and no reaction, the final volume is 10 parts and concentration is 1/10 of the concentrate value. Do not confuse liquid ratio with final dilution factor.

Confirm the DRPL-0109 configuration for your instrument

Submit requirements

Concentrate-to-diluent volume ratio

1:9

Concentrate parts

Diluent parts

Concentrate volume (μL)

100

Diluent volume (μL)

900

Combined volume (mL)

Speed

60–300 rpm

Minimum flow QMin (mL/min)

Maximum flow QMax (mL/min)

300

Reagent A working-fluid port

1/4-28 UNF-2B

Reagent B working-fluid port

G1/8 (metal push-in fitting by default)

Reagent A wash-fluid port

1/4-28 UNF-2B

Reagent B wash-fluid port

1/4-28 UNF-2B

Reagent A pressure rating

Max 150 kPa

Reagent B pressure rating

Max 150 kPa

Dimensions (mm)

180 × 83.7 × 75 mm

Weight

1536 g

Accuracy

<2%

Repeatability

<0.5%

Service life

20,000,000 cycles

Confirm the DRPL-0109 configuration for your instrument

DRPL-0109 Dual-Head Ceramic Piston Pump for IVD Reagent Dilution

Typical applications

Automated analyzers: on-instrument concentrate dilution

Laboratory and reagent preparation: fixed-ratio buffer dilution

Reagent production: proportional batch dosing

Define the fluidic task and configuration

Datasheet not yet available

Frequently Asked Questions

Confirm the DRPL-0109 configuration for your instrument

DRPL-0109 Dual-Head Ceramic Piston Pump for IVD Reagent Dilution

Typical applications

Automated analyzers: on-instrument concentrate dilution

Laboratory and reagent preparation: fixed-ratio buffer dilution

Reagent production: proportional batch dosing

Define the fluidic task and configuration

Datasheet not yet available

Frequently Asked Questions

Confirm the DRPL-0109 configuration for your instrument