Digital micropipette

Introduction

A digital micropipette is a laboratory instrument used to measure and transfer small, precise volumes of liquid, typically from 0.1 microliters to 10 milliliters, and it is one of the most essential instruments in biology, chemistry, clinical, and molecular biology laboratories. The digital micropipette consists of a handle with a plunger, a digital display, a volume adjustment mechanism, and a disposable tip, and the volume is set digitally, typically in steps of 0.1 microliters or smaller, and the operator attaches a tip, presses the plunger, aspirates the liquid, and dispenses it by pressing the plunger again; the digital micropipette provides accurate and precise liquid handling, with an accuracy and precision of about 1% or better, and it is available in various models for different volume ranges, including single-channel and multi-channel micropipettes, and it may include features such as a volume lock, a tip ejector, and autoclavable parts, and it is calibrated regularly to ensure accuracy. Digital micropipettes are used for dispensing reagents and samples in PCR and other molecular biology reactions, for preparing solutions, for transferring samples for analysis, for cell culture, for immunoassays, for dispensing in microplates, for quality control, and for many other applications, in research, clinical, pharmaceutical, and educational laboratories, and they are essential for any procedure that requires accurate small-volume liquid handling. With their precision and convenience, digital micropipettes are essential instruments for liquid handling in laboratories.

Digital Micropipette LDP-T2011

Digital Micropipette offers pipetting, with a volume range of 2 to 10 mL. It also delivers 0.1 mL increment and 10 mL test volume for unparalleled accuracy. Our durable, single-channel m...

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Digital Micropipette LDP-T2010

Digital Micropipette provides a pipetting volume range from 0.1 to 2.5 µL. It delivers precise 0.05 µL adjustments and a test volume of 0.25µL for precise liquid handling. Our pipette...

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Standards

JJG 646-Metrological verification regulation for pipettes

Complies with the above standards, but is not limited to them.

Features

1. Digital micropipette for precise, accurate liquid handling in microliter volume ranges.

2. Electronic digital micropipette with programmable volumes and modes for reliable liquid transfer.

3. Suitable for molecular biology, biochemistry, clinical, pharmaceutical, food, environmental and research labs.

4. Includes micropipette body, digital display, control buttons, tip ejector, charger and operation manual.

5. Supports accurate, reproducible liquid dispensing for PCR, ELISA, cell culture, assays and general lab use.

FAQ

Q1: What testing scenarios is this pipette mainly applied to?

A: The digital micropipette is used in molecular biology, biochemistry, clinical diagnostics, pharmaceutical analysis, food testing, environmental testing, forensic science, chemistry, academic research and general laboratory settings to accurately and reproducibly transfer and dispense small liquid volumes (typically 0.1 microliter to 10 mL, depending on model) using electronic digital control for various liquid handling tasks including sample preparation, reagent addition, serial dilution, assay setup, PCR/qPCR setup, ELISA, cell culture, nucleic acid extraction, protein analysis, and general laboratory liquid transfer. It supports molecular biology (PCR/qPCR reaction setup - precise reagent addition for master mixes and samples; nucleic acid extraction - reagent addition for lysis, binding, washing, elution; gel electrophoresis - sample loading; restriction digests; cloning), biochemistry and protein analysis (enzyme assays - precise substrate/enzyme addition; protein quantification (BCA, Bradford, Lowry); ELISA - reagent and sample addition; Western blot sample preparation; chromatography fraction collection), clinical diagnostics (immunoassays, clinical chemistry sample preparation, hematology, molecular diagnostics - precise sample and reagent addition for diagnostic tests), pharmaceutical analysis (assay preparation, dissolution sampling, content uniformity, stability testing, QC testing), food testing (pathogen detection sample preparation, allergen testing, pesticide residue analysis, food composition analysis), environmental testing (water quality testing, soil analysis, air sample analysis, pollutant detection), forensic science (DNA/RNA extraction from evidence, serology, toxicology sample preparation), chemistry (solution preparation, titration, reagent addition, standard preparation), and general laboratory liquid handling (any task requiring accurate small-volume liquid transfer). The electronic digital design provides improved accuracy and precision compared to manual (air displacement) micropipettes, with programmable modes (multi-dispense, serial dilution, mixing, reverse pipetting) and digital volume setting for reproducible, error-free liquid handling in high-throughput and critical applications.

Q2: What standards does the pipette comply with?

A: The digital micropipette follows relevant ISO, ASTM, IEC and GB/T standards for pipettes and liquid handling, including ISO 8655 (piston-operated volumetric apparatus - part 2: piston pipettes, part 3: dispensers, part 6: gravimetric measurement for performance assessment, part 7: non-gravimetric measurement), ISO 17025 (testing laboratory competence, for calibration), ASTM E1154 (specification for piston-operated pipettes), and relevant GB/T standards (GB/T 27025 for calibration laboratories, related). The hardware complies with IEC 61010 safety standards and applicable EMC standards. Calibration (performance verification) should be performed per ISO 8655-6 (gravimetric method - weigh dispensed water with calibrated analytical balance, calculate accuracy and precision) or ISO 8655-7 (non-gravimetric methods - photometric, fluorometric, for routine checks). For clinical/pharmaceutical use, follow GMP/GLP and applicable regulatory requirements (21 CFR Part 11 for electronic records if applicable). Users should verify the specific accuracy class (ISO 8655 defines performance limits for pipettes - the pipette should meet the specified accuracy and precision limits at nominal, 50% of nominal, and minimum volume).

Q3: What is the warranty period for the whole pipette and key components?

A: The whole digital micropipette is covered by a 12-month warranty. The pipette body (housing, piston assembly, digital display, control buttons, electronics, battery/charging circuit), tip ejector and charging adapter are covered, while pipette tips (disposable - not part of pipette), batteries (rechargeable - may have separate warranty), seals, O-rings, filters (for filter tips) and fuses are consumables or accessories. Damage from improper use, liquid contamination inside the pipette (corrosion from corrosive liquids, biological contamination), dropping, battery damage or unauthorized repair is excluded. Extended warranty may be available. Rechargeable battery typically has 1-2 year warranty or 300-500 charge cycles. The piston assembly is the core precision component - damage or wear affects accuracy.

Q4: Is this device difficult to operate? Is professional training required?

A: Operation is simple for basic use: set volume digitally, attach tip, aspirate and dispense. No professional training is required for basic liquid transfer, but for accurate, reproducible results (especially at low volumes < 10 microliters), users should understand proper pipetting technique (pre-wetting tip, proper angle, immersion depth, speed, reverse pipetting for viscous/volatile liquids), tip selection (quality tips matter), calibration, and maintenance. We provide operation manuals, training and application support. Proper technique (pre-wet tip 2-3 times before sample aspiration - equilibrates tip and improves accuracy; hold pipette vertically when aspirating, at 30-45 degree angle when dispensing; immerse tip 1-3 mm below liquid surface (2-3 mm for small volumes, 3-6 mm for large volumes) - too deep causes liquid on outside of tip, too shallow causes air aspiration; aspirate and dispense slowly and smoothly - rapid plunger movement causes inaccuracy, especially at low volumes and with viscous liquids; allow proper delay after aspiration (1-2 seconds for viscous liquids) and after dispensing (1-2 seconds, touch tip to wall of receiving vessel for residual liquid); use reverse pipetting for viscous liquids, foaming liquids, and very small volumes (< 2 microliters) - aspirate extra volume, dispense only the target volume, discard the excess; use forward pipetting for aqueous solutions; change tip between samples to prevent cross-contamination; use filter tips for PCR, molecular biology, and hazardous samples to prevent aerosol contamination inside the pipette), tip selection (use high-quality tips compatible with the pipette brand - poor quality tips cause leaks, inaccuracy, and dripping; verify tip fit - no leakage; use sterile, DNase/RNase-free tips for molecular biology; use low-retention tips for proteins and viscous samples; use filter tips for contamination-sensitive work), calibration (regular calibration and performance verification - accuracy drifts over time due to seal wear, piston wear, and contamination), and maintenance (clean exterior, check for liquid contamination inside, replace seals per schedule, keep charged) are important for accurate, reliable pipetting.

Q5: What is the typical lead-time for order delivery?

A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.

Q6: Is regular calibration required? What is the recommended calibration cycle?

A: Calibration (performance verification) recommended every 3-12 months depending on usage (high-usage/critical applications: every 3-6 months; general laboratory: every 6-12 months), or per quality system. Calibration should be performed per ISO 8655-6 (gravimetric method - weigh dispensed distilled/deionized water with calibrated analytical balance (0.01 mg readability for volumes < 10 microliters, 0.1 mg for 10-100 microliters, 1 mg for > 100 microliters), at controlled temperature (18-25 degrees C, stable +/- 0.5 degrees C) and humidity (40-60% RH - to minimize evaporation), test at 3 volumes: nominal (100%), 50% of nominal, and minimum volume (10% or specified minimum), 6-10 replicates per volume, calculate accuracy (systematic error - % difference from nominal) and precision (random error - CV, coefficient of variation), compare to ISO 8655 limits). Routine checks with a check volume or photometric/fluorometric method (ISO 8655-7) before each use or per day (for critical work - quick verification). Full pipette performance verification annually or by accredited laboratory (ISO/IEC 17025) for regulated environments. Seal/piston replacement when calibration fails (after cleaning and adjustment - if accuracy cannot be restored, replace seals and piston). Battery performance check every 6 months (replace when runtime decreases). For clinical/pharmaceutical use, follow GMP/GLP calibration schedules and maintain calibration records (each pipette should have a unique ID, calibration schedule, and calibration history).

Q7: Are supporting consumables universal?

A: Pipette tips (disposable - various volumes: 0.1-10 microliter, 2-200 microliter, 100-1000 microliter, 1-5 mL, 1-10 mL; sterile/non-sterile; filtered/non-filtered; low-retention; extended length; racked/bulk/refill - selected based on pipette volume range and application), tip filters (for filter tips), calibration equipment (analytical balance, evaporation trap, distilled water - for in-house calibration), charging adapter/cable, batteries (rechargeable), seals/O-rings (replacement kits), cleaning supplies (70% ethanol, distilled water, mild detergent), stands (pipette stands for storage) and fuses are available from laboratory suppliers, though tips should be compatible with the pipette brand (most major brands have universal tip compatibility for standard volumes, but some proprietary tip systems exist - verify tip compatibility before purchasing; using incompatible tips causes leaks and inaccuracy). Long-term consumable cost includes pipette tips (primary ongoing cost - per test cost depends on tip type; sterile filtered tips are more expensive than bulk non-sterile tips; tip cost can be significant for high-throughput labs), and occasional seal/battery replacement.

Q8: Can I customize parameters or supporting accessories?

A: Customization includes volume range (0.1-2.5 microliter, 0.5-10 microliter, 2-20 microliter, 5-50 microliter, 10-100 microliter, 20-200 microliter, 100-1000 microliter, 0.5-5 mL, 1-10 mL - select based on typical volumes; use a pipette where the target volume is 30-100% of nominal for best accuracy), channels (single-channel for general use; multi-channel (8, 12, 16, 24, 96 channels) for high-throughput work with microplates - PCR, ELISA, cell culture), modes (basic: aspirate/dispense; advanced: multi-dispense (repeated dispensing from one aspiration), serial dilution, mixing (aspirate/dispense cycles), reverse pipetting, pipetting speed adjustment, programmable custom protocols), display (LCD, OLED, color touchscreen), connectivity (USB, Bluetooth, Wi-Fi for data logging and LIMS integration - for traceability in regulated environments), ergonomics (lightweight, comfortable grip, easy tip ejection, minimal force - for high-throughput use to reduce repetitive strain injury), charging (rechargeable lithium-ion, battery life, charging stand), language and accessories. Additional tips, stands, charging stands, calibration kits and accessories can be ordered separately. Custom orders extend delivery lead-time moderately.

Q9: Does the purchase include on-site installation and commissioning service?

A: No installation is required for digital micropipettes. The package includes the pipette, charging adapter, tip ejector (integrated), calibration certificate (manufacturer calibration - may be included or optional), and instruction manual. On-site training and calibration are available at additional cost for regulated laboratories. Remote guidance is provided. For critical/clinical/pharmaceutical use, calibration by an accredited laboratory (ISO/IEC 17025) before use is recommended.

Q10: What types of liquids are compatible with this equipment?

A: The digital micropipette transfers aqueous solutions (buffers, media, water, reagents, standards, samples - most common; easy to pipette with standard technique), viscous liquids (glycerol, DMSO, oils, syrups, protein solutions, polymer solutions - require reverse pipetting, slower speed, wider bore tips, pre-wetting; viscous liquids have higher residual volume in tip and slower aspiration/dispense), volatile liquids (ethanol, methanol, acetone, chloroform, hexane - require reverse pipetting, pre-wetting, fast operation, filter tips (some vapors can corrode piston); volatile liquids evaporate quickly causing dripping and inaccuracy), corrosive liquids (acids, bases, bleach, phenol, chloroform - require filter tips to prevent aerosol/vapor contamination inside pipette; avoid drawing liquid into pipette body; clean immediately if contamination occurs; some corrosive vapors can damage piston and seals over time - use dedicated pipettes for corrosive liquids), radioactive liquids (radioisotopes - require filter tips, proper shielding, dedicated pipettes, contamination monitoring; follow radiation safety procedures), biohazardous liquids (patient samples, microbial cultures, viruses - require filter tips, proper PPE, biosafety cabinet, dedicated pipettes; follow biosafety procedures; decontaminate pipette after use), organic solvents (chloroform, phenol, DMSO, acetonitrile - may dissolve some plastic tips (use solvent-resistant tips or glass capillaries); can damage pipette seals over time (use filter tips, dedicated pipettes); high vapor pressure causes dripping), protein solutions (serum, antibody solutions, enzyme solutions - may adhere to tip walls (use low-retention tips, pre-wetting); foaming (avoid foaming - dispense slowly, touch tip to wall); viscous), and other liquids within the volume range, viscosity, and chemical compatibility specification. IMPORTANT: Air displacement micropipettes (the most common type) are designed for aqueous solutions - accuracy with viscous and volatile liquids is reduced unless proper technique (reverse pipetting, pre-wetting) is used. For highly viscous or volatile liquids, consider positive displacement pipettes (which use a disposable piston in the tip, eliminating air gap and providing better accuracy for difficult liquids) or specialized tips. Different liquids require specific technique: Aqueous (forward pipetting, standard speed, pre-wet tip 2-3 times; immerse 1-3 mm; aspirate/dispense smoothly; allow 1 second delay after dispensing; touch tip to receiving vessel wall). Viscous (reverse pipetting - aspirate extra volume, dispense target volume, discard excess; slower aspiration/dispense speed; pre-wet tip 3-5 times; use wider bore tip if available; allow 2-3 seconds delay after aspiration and dispensing; touch tip to wall; wipe outside of tip carefully before dispensing (without touching opening). Volatile (reverse pipetting; pre-wet tip 3-5 times (equilibrates air column with vapor, reducing evaporation); work quickly; use filter tips; keep tip immersed during aspiration; dispense quickly; avoid holding liquid in tip for extended time; if dripping occurs, discard and re-aspirate). Corrosive/radioactive/biohazardous (ALWAYS use filter tips (prevents aerosol/vapor from entering pipette body and contaminating future samples; protects pipette internal components from corrosion); use dedicated pipettes (do not use the same pipette for corrosive and non-corrosive work; label dedicated pipettes); proper PPE and containment (fume hood for corrosive/volatile, biosafety cabinet for biohazard, shielding for radioactive); decontaminate after use (70% ethanol for general, appropriate decontamination for specific hazards); never draw liquid into the pipette body (if this happens, disassemble and clean immediately per manufacturer instructions - corrosive liquid inside can permanently damage piston and seals). Cross-contamination prevention is critical (change tip between every sample and reagent; use filter tips for PCR/molecular biology to prevent amplicon contamination; use aerosol barrier tips; avoid touching tip to non-sterile surfaces; use separate pipettes for pre-PCR and post-PCR work in molecular biology; decontaminate pipette surfaces with 70% ethanol or DNAzap between experiments). The pipette should be stored vertically on a pipette stand (not lying flat - liquid residue can run into piston; vertical storage prevents contamination and damage; keep away from heat sources and direct sunlight; keep charged (for electronic pipettes - do not fully discharge lithium-ion batteries for long-term storage; store at 40-60% charge; recharge every 3-6 months during storage). The pipette should be cleaned regularly (exterior: wipe with 70% ethanol or mild detergent; do not immerse electronic pipette in liquid (unless rated for it - most electronic pipettes are not submersible); interior: if liquid contamination occurs, disassemble per manufacturer, clean piston and seal with appropriate solvent, dry, reassemble, recalibrate; do not use abrasive cleaners or harsh solvents on plastic housing (can damage or discolor). For high-throughput laboratories, consider multi-channel pipettes or automated liquid handling systems (robotic pipetting workstations) for increased throughput and reduced repetitive strain injury (RSI) - electronic pipettes reduce plunger force compared to manual, but multi-channel and high-frequency use can still cause RSI; use ergonomic pipettes, take breaks, and consider automation for very high volume work. Waste (used tips, contaminated consumables, packaging) should be disposed of per applicable regulations (biohazard waste for contaminated tips, sharps if using glass capillaries, chemical waste for corrosive/radioactive contamination - do not throw contaminated tips in regular trash; follow institutional waste disposal procedures).