Frequently Asked Questions

No. These figures apply at full stroke under the specified conditions. The 2% stroke figures are ≤2.0% accuracy and ≤1.5% repeatability; the footnotes describe displacement testing, not a guarantee of reagent performance at arbitrary small doses.

Check all wetted materials against composition, concentration and temperature and plan shutdown flushing and residual-liquid handling. Seal wash is a listed EA option. The expected five-million-cycle life uses pure water at room temperature and 50 kPa back pressure and is not a universal reagent-life guarantee.

The 300 mL/min value is the no-load flow rate stated in the current DPL30 datasheet under the specified test conditions. It does not mean that the pump will deliver 300 mL/min under every back-pressure, suction-lift, tubing, or fluid condition. Actual flow should be determined from the fluidic resistance, flow-pressure curve, and operating point.

No. The 300 mL/min value is the no-load flow rate, while 100 kPa is the rated pressure. They are separate performance parameters and do not mean that the DPL30 maintains 300 mL/min at 100 kPa. Flow under pressure should be confirmed from the flow-pressure curve and the actual fluidic circuit.

Define the minimum and maximum dispense volumes, total batch volume and acceptable refill time before selecting a compatible syringe. Syringe capacity is not the minimum reliable dispense volume. Validate small-volume delivery with the actual liquid, needle, tubing and backpressure.

Check that the inlet tube is submerged and connections are sealed, then prime the syringe and tubing to remove air. Route priming liquid to an appropriate waste path before measuring delivered volume. If bubbles persist, check aspiration speed, air leaks and liquid condition.

Accuracy describes deviation from the target volume; repeatability describes variation between repeated dispenses. Drive resolution does not replace either measure. Test repeatedly at the target dose, liquid, speed and backpressure, and state the applicable syringe and test conditions when quoting specifications.

A single syringe must refill, so a complete cycle includes dispensing, valve switching and aspiration. If uninterrupted delivery is required, evaluate an alternating-pump or buffer arrangement and verify flow fluctuations. A larger syringe may reduce refill frequency for some tasks but does not guarantee continuous flow.

pLLD is pressure-based liquid level detection, cLLD is capacitive detection and hLLD is hybrid detection. SMTP2 specifications support all three. Selection requires checking liquid properties, tip design, equipment grounding and axis motion, then validating detection positions and trigger conditions with the intended liquid. No method should be assumed to be best for every application.

The datasheet includes Multiple dispensing performance, providing a basis for evaluating one aspiration followed by several dispenses. The instrument must implement the required commands and motions. Check the total planned delivery and method allowances against available pump and tip capacities, and verify the first, intermediate and final aliquots separately. Nominal capacity alone does not guarantee a particular number of aliquots.

If displacement and the number of complete revolutions stay the same, lower speed mainly increases dispensing time; nominal dose volume stays unchanged. With fixed-duration control, speed changes affect accumulated revolutions and delivered volume, so recalibration is needed.

No. RPL combines rotary and reciprocating motion of a ceramic piston to draw in and discharge liquid without valves in the pumping mechanism. Whether the complete instrument needs switching valves, isolation valves or other fluid-path components depends on its supply, cleaning and safety-control design.

A rotary valve primarily changes connections. Dispensed volume is usually determined by pump metering, liquid conditions and the installed fluid path. Valve internal volume or switching count cannot substitute for dispense volume.

A typical electric rotary valve changes connections by rotating a rotor; a solenoid valve uses electromagnetic force to open, close or switch paths. Function also depends on the flow-path arrangement. Selection, independent shutoff and simultaneous operation are different requirements; actuation method alone does not determine superiority.

Establish the actual position using the model's homing and position-confirmation procedure. A saved software channel number does not prove that the physical position is unchanged. Confirm position before operating the pump.

Establish the required aspiration or delivery path before moving the syringe, and confirm valve status or switching time according to the control protocol. Avoid driving the syringe against a closed path. Include priming, refilling and washing in the operating sequence.

Preferably provide a 2D drawing, 3D file or physical sample. If complete drawings are not yet available, provide the instrument’s installation space, target liquid, aspiration volume, probe length and interface requirements so FOREACH can help identify the initial items to confirm.

Assess the tip geometry, internal polishing, external coating, cleaning method and liquid properties together. For samples or reagents with a high risk of residue, pay particular attention to internal surface roughness, external treatments that reduce liquid retention, and compatibility with the wash station.

Sampling probes primarily aspirate and dispense liquids. Piercing probes emphasize liquid access through sealing films, stoppers or closed consumables. Tip strength, piercing angle and venting geometry generally need to be confirmed.

The blade shape, diameter, length and mounting geometry depend on the cuvette dimensions, liquid volume and available mixing space. A single standard model designation is not sufficient for selection.

Compatibility depends on the formulation, reagent composition and concentration, temperature and contact time. For sensitive sample paths, also evaluate adsorption, extractables and carryover.

Different ODs give different nominal wall thicknesses and affect routing and fitting compatibility. Select the complete ID/OD combination.

Confirm the specific formulation, pumphead size, fatigue life and fluid compatibility first. Connection tubing is not automatically qualified as peristaltic pump tubing.

Typical PTFE is opaque or translucent. If liquid or bubble visibility is required, evaluate the actual tubing sample and compare alternatives such as FEP.

Select the tubing connection size by ID first, then check OD, wall thickness, tolerances, material and hardness. BA-32F-PP-N fits 3.2 mm ID tubing; that does not mean its maximum barb diameter is 3.2 mm. OD helps determine clamping and installation space. When the same tubing ID is paired with different profiles, check drawings and validate insertion, sealing and retention using the actual tubing.

The need for a clamp depends on the specific barb/tubing fit and operating conditions. Assess tubing material and hardness, temperature, pressure peaks, vibration and external tensile loads, then validate sealing and retention according to the assembly requirements. If required, match the clamp to the assembled tubing OD and effective clamping location without damaging the tube or fitting. A clamp cannot compensate for an incorrect tubing size.

Record the ID, OD and material of each tube, then select the corresponding reducing model. BA-24F-32F-PP-N connects 2.4 mm and 3.2 mm ID tubing. Also check each barb code, drawing dimensions and minimum bore. For reducing tees or wyes, use the drawing to identify which size belongs to each port; the sequence of numbers alone does not establish branch direction.

After separation, a valved half closes its own passage automatically, while a non-valved half remains open. If both sides need shutoff, choose a valve in both the male and female halves. A valve does not guarantee zero spillage.

A quick disconnect separates between male and female halves. A push-in fitting releases the tube from the fitting. Q20, Q40 and Q60 use mating halves, so routine disconnection does not require pulling tubing off the rear termination.

Appearance or tube size alone is insufficient. Check mating dimensions, retention and seal location; for valved versions, confirm full valve opening after connection. A series cross-reference does not replace validation of the actual pair.

A lock adds mechanical retention, but allowable working pressure still depends on the specific male/female pair, tubing, materials, temperature and assembly condition. A collar alone does not establish a pressure rating, and another manufacturer's pressure figures cannot be applied to this combination. Validate against the complete connection's specifications and operating conditions.

The ordinary through-bore Luer fittings described here do not inherently provide automatic shutoff. Self-sealing requires the appropriate valve structure. For a fluid path that must stop flow upon disconnection, select a connector or control valve with that specific function.

No. Hand tightening, a dedicated driver and torque-controlled tools are configuration-specific. Flangeless means that no tube-end flange is preformed; it does not guarantee that every model can be installed by feel alone.

Not on OD alone. Their geometries differ and must match the nut and port. Confirm complete part numbers and the approved component combination; trial tightening or extra force does not establish compatibility.

Yes. The ring-and-ferrule design described here uses square-cut tubing without a preformed flange. Conventional ferrule fittings can also be flangeless, but parts and assembly differ; the name alone does not establish interchangeability.

Yes. Initial kit preassembly requires compatible dedicated pliers: FOREACH T-SF-4-SS, product code 959016. Hand pressure alone is unlikely to seat the ring and ferrule correctly, and higher nut torque cannot replace preassembly. Check tool compatibility with the kit and tubing size. Inspect complete, previously assembled ends before reconnecting.

No. 1/4-28 UNF is parallel with 28 threads per inch; SA-1/4NPT uses 1/4-18 NPT, tapered with 18 threads per inch. Dimensions, pitch and form differ. The same sealing material cannot make them interchangeable.

No. FOREACH SA/SAL use PTFE tape or compatible thread sealant. SB/SBS/SBR seal by bottom-face contact without either. SC female receivers follow the requirements of the mating rigid-tube fitting and sealing components.

Stop and depressurize first. Check tube seating, sealing components and the port seat. In a flat-bottom face-sealing assembly, thread tape cannot repair a leaking face seal and further tightening may damage the plastic body. Correct the mating parts or replace damaged components, then tighten and leak-test according to the assembly instructions.

The PMBSN nut clamps the panel; tubing seals by contacting the barb. Stop and depressurize, then check tube dimensions, insertion, end damage and material changes. Retest after repair. More panel-nut torque cannot correct a poor tube-to-barb fit.

The PMB described here secures a panel connection and joins flexible tubing. A tank-wall penetration also needs a purpose-designed, validated seal between fitting and wall. Select the complete wall-sealing assembly for the tank structure, fluid and pressure.

It does not directly contact the liquid. The module clamps around transparent tubing for detection, helping reduce contamination risk and additional flow resistance.

This depends on the actual bubble size. The detectable bubble or liquid width is > 0.8 mm; smaller bubbles or liquid segments may not be identified reliably.

PDM5 uses I2C communication. Its default 7-bit I2C address is 0x6D.

Provide the tubing material, inside and outside diameters, length and tolerances, drawings of both ports, fitting and seal requirements, installation space and identification requirements. Confirm the matching components for each termination type, such as flanged, compression ring or ferrule fittings; identical threads alone do not establish interchangeability.

Also specify the process and cleaning fluids, concentration, temperature, pressure or vacuum, target flow rate and duty cycle so sample validation covers actual assembly and operating conditions.

Start with a fluid-circuit diagram, drawings of the threads and sealing surfaces at each port, and tubing inside/outside diameters and material. Add the fluid, concentration, pressure, temperature, flow rate and available space. For existing parts, include the complete model number, photographs or sample details.

For quick-disconnect couplings, specify which side must shut off when disconnected. For bulkhead fittings, provide panel thickness and hole geometry. Distinguish mandatory requirements from conditions that can be adjusted.

Record the complete model, material configuration, drawing revision, actual tubing specification and approved assembly method. Agree on acceptance checks and the required material and quality documents. Validate installation, sealing, tensile loading and actual start/stop conditions; check suction sections for air ingress under vacuum.

When fittings or tubing change, assess whether the original validation remains applicable. Similar appearance alone is not sufficient to carry over sample approval.

No. RoHS and REACH documents provide substance-compliance information within their stated scope. An SDS provides material safety, handling and storage information. These documents alone do not establish long-term compatibility with a particular reagent or demonstrate a leak-free connection.

Check the material or model, revision and scope covered by the documents. Then validate compatibility and sealing using the reagent composition, concentration, temperature, contact time and actual connection assembly.

Compare the current batch with the approved samples. Check the complete model, material configuration, drawing revision, tubing dimensions and material, assembly method and delivery records. Inspect the barb profile, critical dimensions, flow passage, burrs or damage, and model/material identification.

If tubing, fitting materials or assembly conditions change, evaluate and revalidate affected items. Sampling rates, test items and supplied documentation follow the project’s agreed quality requirements.

First stop the equipment and depressurize it according to its operating instructions. Record whether the leak is at the threaded port, tubing end or mating coupling, and whether it occurs during positive-pressure delivery, suction, start/stop operation or after a temperature rise.

Provide the full fitting model, tubing material and dimensions, port photographs or drawings, fluid, pressure, temperature and recent replacement or disassembly history. Tubing-end leaks, face-seal failures and coupling-fit issues require separate checks; increasing tightening force is not a universal remedy.

No. Also check the fitting body, port sealing geometry and complete seal or kit model. Different series may have different geometries and mating requirements even when the tubing outside diameter is identical.

For example, CL-1S-16 and CL-1X-16 both fit 1.6 mm OD tubing but use different fittings and ports. Check the matching-component documentation and tube-end condition before replacement, follow the specified assembly procedure and then test for leaks.