Gel card centrifuge

Introduction

A gel card centrifuge is a specialized centrifuge used for the centrifugation of the gel cards, which are used in the blood banking and the immunohematology for the blood grouping, the cross-matching, and the antibody testing, and it is used in the blood banks, the clinical laboratories, and the hospitals. The gel card centrifuge consists of a rotor that holds the gel cards, a motor, a control and a display, and a lid with the safety lock, and it centrifuges the gel cards at the specified speed and the time, which are specific for the gel card tests, and it may provide the different programs for the different tests, such as the blood grouping and the cross-match; the gel card centrifuge is used for the centrifugation of the gel cards in the blood grouping, for the cross-matching, for the antibody screening, for the direct antiglobulin tests, for the processing of the samples in the blood bank, and for many other applications, and it provides a controlled and a reproducible centrifugation, with features such as the programmable cycles and the safety features; the gel card centrifuge is an essential equipment in the blood bank and the immunohematology laboratory. Gel card centrifuges are used in the blood banks, in the clinical laboratories, in the hospitals, in the transfusion services, and for many other applications. With their gel card centrifugation, gel card centrifuges are essential for the immunohematology testing.

Gel Card Centrifuge LGCC-T2010

Gel Card Centrifuge has a capacity of 24 gel cards with a speed range of 500 to 2200 rpm. It has a wide timing range, from 1 to 30 minutes, allowing for both short spins and extended cyc...

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Standards

IEC 61010-2-020:2016-Particular requirements for laboratory centrifuges

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

Features

1. Gel card centrifuge for centrifuging gel card assays in blood banking and immunhematology.

2. Specialized centrifuge with gel card rotor for ID gel card testing (blood grouping, antibody screening, crossmatching).

3. Suitable for blood banks, transfusion services, clinical laboratories, hospitals and diagnostic centers.

4. Includes gel card rotor, lid, safety interlock, controller, timer, speed control and operation manual.

5. Supports gel card centrifugation for blood typing, antibody detection, crossmatching and DAT testing.

FAQ

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

A: The gel card centrifuge is used in blood banks, transfusion services, clinical laboratories, hospitals, diagnostic centers, and reference laboratories to centrifuge gel card assays (ID cards, gel microtube cards) for blood banking and immunohematology testing, including ABO/Rh blood grouping, antibody screening and identification, crossmatching (compatibility testing), direct antiglobulin test (DAT), and other hemagglutination assays using gel card technology. It supports blood bank routine testing (ABO forward/reverse grouping, Rh D typing, weak D testing, antigen typing (C, c, E, e, K, k, Fya, Fyb, Jka, Jkb, M, N, S, s)), antibody screening and identification (detecting unexpected red cell antibodies in patient/donor serum using screening cells and panel cells), crossmatching (major/minor crossmatch for transfusion compatibility), DAT (direct antiglobulin test - detecting antibody/complement on patient red cells, for hemolytic disease of newborn (HDN), autoimmune hemolytic anemia (AIHA), drug-induced hemolysis, transfusion reaction investigation), and other gel card assays (enzyme tests, eluate testing, antibody titration).

Q2: What standards does the centrifuge comply with?

A: The gel card centrifuge follows relevant IEC, ISO, CLSI and GB/T standards including IEC 61010-2-020 (safety requirements for centrifuges), ISO 13485 (medical device quality management, for clinical use), CLSI guidelines (clinical laboratory standards), and applicable medical device regulations (FDA 510(k), CE IVD, NMPA). The hardware complies with applicable EMC standards. For clinical use, the instrument should be IVD-registered/approved. Calibration should verify speed (RPM) and time accuracy using calibrated tachometer and timer. Gel card assays should follow manufacturer instructions (e.g., DiaMed-ID, Bio-Rad ID, Ortho BioVue, Grifols DG Gel - each has specific centrifugation requirements).

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

A: The whole gel card centrifuge is covered by a 12-month warranty. The gel card rotor, motor, controller, lid, safety interlock and housing are covered, while rotor seals, gel card holders/inserts, and fuses are consumables or accessories. Damage from improper use, rotor imbalance (broken gel card, improper loading), fluid spillage, motor damage or unauthorized repair is excluded. Extended warranty may be available.

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

A: Operation requires trained clinical laboratory personnel (medical technologists/technicians) familiar with blood banking and immunohematology. We provide operation manuals and training. Proper gel card preparation (label cards, add reagents and red cells/serum per assay protocol, incubate if required (e.g., 15 minutes at room temperature or 37 degrees C for antibody screening, 10-15 minutes for ABO grouping - follow manufacturer instructions)), centrifuge setup (load gel cards into rotor (specific orientation - cards must be properly seated in holders, not overloaded; balance rotor (load cards symmetrically or use balance counterweight), set parameters (speed typically 700-1000 RPM (or specific g-force ~70-100 x g), time typically 5-10 minutes - follow gel card manufacturer instructions (DiaMed: 10 minutes at ~70 x g; Bio-Rad: 10 minutes; BioVue: 5 minutes at specific speed; Grifols: 10 minutes)), close lid (ensure safety interlock engaged), start centrifuge), post-centrifugation handling (remove cards carefully (do not shake or invert - agglutination pattern is fragile), read results immediately (interpret agglutination pattern: positive = agglutinated red cells trapped at top or throughout gel (0-4+ grading), negative = red cells pellet at bottom of gel microtube), record results), and quality control (run control cards (positive and negative controls) per shift or per batch; verify centrifuge performance (speed, time) per schedule; maintain reagent and cell quality), and biosafety (all patient samples treated as potentially infectious (bloodborne pathogens - HIV, HBV, HCV); proper PPE (lab coat, gloves, safety glasses); handle broken gel cards carefully (glass microtubes can break - sharps hazard); decontaminate centrifuge after spills; dispose of gel cards as biohazard waste) are important for accurate, safe gel card testing.

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: Speed (RPM) calibration recommended every 6-12 months using calibrated tachometer (verify at set speed - gel card centrifugation requires specific speed/g-force; incorrect speed affects agglutination pattern (too fast = false positive (cells forced through gel), too slow = false negative (cells not properly pelleted))). Timer accuracy verification every 6-12 months. Routine safety interlock check (lid interlock, imbalance shutdown) before each use. Full centrifuge performance verification annually. Rotor inspection (cracks, corrosion, wear) every 3-6 months (rotors have finite lifespan - replace per manufacturer schedule or when damaged). For clinical use, follow applicable quality management (CLIA, CAP, ISO 15189) calibration schedules and maintain records.

Q7: Are supporting consumables universal?

A: Gel cards (ID cards - from specific manufacturers: DiaMed-ID (Bio-Rad), Ortho BioVue, Grifols DG Gel, Micro Typing Systems (MTS) - NOT universal (each brand has specific card format, reagents, and centrifugation requirements; cannot mix brands), gel card reagents and red cell suspensions (from gel card manufacturer - ABO/Rh reagents, screening cells, panel cells, AHG reagent, control cells), rotor inserts/holders (specific to centrifuge model and gel card type), rotor seals, cleaning supplies (disinfectant, 70% ethanol), and fuses are available from clinical laboratory suppliers, though gel cards and reagents are brand-specific (must use the same brand system - cards, reagents, centrifuge settings are matched). Long-term consumable cost includes gel cards and reagents (per test - moderate to high cost; gel card technology is more expensive than traditional tube testing but faster and more standardized).

Q8: Can I customize parameters or supporting accessories?

A: Customization includes rotor capacity (number of gel cards per run - typically 6, 12, 24 cards; some models can also accommodate microtiter plates or test tubes with additional rotors), speed range (typically 200-2000 RPM, with specific gel card setting), timer range, acceleration/deceleration control (gentle ramps to prevent disturbing gel/cells), rotor type (gel card-specific rotor, or multi-purpose rotor with gel card insert), control panel (digital, programmable memory for different gel card protocols (ABO, antibody screen, DAT - each may have different speed/time)), safety features (lid interlock, imbalance shutdown, overspeed protection, emergency stop), language and accessories. Additional rotors (for test tubes, microplates), gel card holders and accessories can be ordered separately.

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

A: Standard delivery includes the gel card centrifuge, gel card rotor, power cord and instruction manual. On-site installation and training are not included for standard orders but can be arranged at additional cost. Remote guidance is provided.

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

A: The gel card centrifuge is designed specifically for gel card (microtube gel) assays in immunohematology, including: ABO blood grouping (forward grouping: patient red cells + anti-A, anti-B, anti-A,B, anti-D reagents; reverse grouping: patient serum + A1, B, O red cells - agglutination = positive), Rh typing (anti-D, anti-C, anti-c, anti-E, anti-e, anti-K, etc. - weak D testing requires indirect antiglobulin technique (IAT) gel cards with AHG), antibody screening (patient serum + screening red cells (typically 2 or 3 cell panel) - detects unexpected clinically significant antibodies; IAT gel cards with AHG), antibody identification (patient serum + panel red cells (10-16 cell panel with known antigen profiles) - identifies antibody specificity (e.g., anti-D, anti-E, anti-K, anti-Fya, anti-Jka)), crossmatching (patient serum + donor red cells - major crossmatch (detects recipient antibody against donor cells); immediate spin (IS) crossmatch for ABO-compatible, negative antibody screen patients; IAT crossmatch for patients with positive antibody screen or history), DAT (direct antiglobulin test - patient red cells + AHG reagent (anti-IgG, anti-C3d, or polyspecific) - detects in vivo antibody/complement coating of red cells; used for HDN (hemolytic disease of fetus/newborn - maternal antibody coating fetal/newborn red cells), AIHA (autoimmune hemolytic anemia - autoantibody coating patient red cells), drug-induced hemolysis, transfusion reaction investigation (patient/donor incompatibility)), and other assays (antibody titration (serial dilution of serum + red cells - determines antibody strength/titer, important for HDN monitoring and antenatal testing), eluate testing (eluted antibody from patient red cells + panel cells - identifies antibody specificity in AIHA/HDN), enzyme-treated cell testing (ficin/papain-treated red cells - enhances some antibodies (Rh, Kidd, Lewis, P) and diminishes others (Duffy, MNS), useful for antibody identification), and donor testing (ABO/Rh typing of donor units, weak D testing for donor units)). IMPORTANT: Gel card technology (microtube gel agglutination) differs from traditional tube testing: (1) Gel cards contain small microtubes filled with dextran acrylamide gel (or glass beads for BioVue) with reagents (or neutral gel for adding reagents); red cells are added on top of the gel; during centrifugation, unagglutinated (negative) red cells travel through the gel and pellet at the bottom (small, discrete button); agglutinated (positive) red cells are trapped at the top (4+) or throughout the gel (1-3+) because agglutinates are too large to pass through gel pores; grading: 4+ = solid band of agglutinated cells at top (no cells at bottom), 3+ = most cells at top, some in upper gel, 2+ = cells distributed throughout gel (band at top + some in middle + some at bottom), 1+ = few agglutinates in gel, most cells at bottom, +/- (weak positive) = very fine agglutinates just above bottom, 0 (negative) = all cells pellet at bottom (compact button), mixed field (MF) = two populations (agglutinated cells at top + unagglutinated cells at bottom - seen in transfusion, weak D, mosaic populations). (2) Gel card centrifugation requires specific, lower speed/g-force (~70-100 x g, 700-1000 RPM) and longer time (5-10 minutes) compared to regular clinical centrifuges (which spin at 1000-3000 x g for 5-10 minutes); using a regular centrifuge at high speed will force cells through the gel, causing false negatives; gel card centrifuges are specifically designed with rotors and speed settings for gel cards. (3) Each gel card brand has specific centrifugation requirements (DiaMed-ID: 10 minutes at ~70 x g (specific RPM depends on rotor radius); Bio-Rad ID: 10 minutes; Ortho BioVue: 5 minutes at specific speed (glass bead technology, different from gel); Grifols DG Gel: 10 minutes; MTS: 10 minutes; ALWAYS follow the gel card manufacturer instructions for speed and time - using wrong settings causes invalid results. (4) Gel cards must be properly stored (2-8 degrees C for reagent cards (ABO/Rh, screening cells, panel cells - do not freeze; allow to warm to room temperature before use); room temperature for some neutral gel cards; check package insert; cards have expiration dates - do not use expired cards; inspect cards for discoloration, drying, bubbles before use). (5) Incubation is required for some assays (antibody screening/identification, IAT crossmatch, DAT, weak D - typically 15 minutes at room temperature for ABO/Rh, 15-30 minutes at 37 degrees C for antibody screen/IAT; follow manufacturer instructions; incubate BEFORE centrifugation (incubation allows antigen-antibody reaction; centrifugation then separates agglutinated from unagglutinated cells). (6) Reading and interpretation: read cards against a light source (backlit reader or light box) to clearly see agglutination pattern; grade reactions per manufacturer grading system; record results immediately (do not delay - agglutination patterns can change if cards are left standing (cells can dissociate or settle further); for IAT cards, add AHG and check cells if negative (verify AHG activity - if check cells agglutinate, AHG was active and negative result is valid; if check cells do not agglutinate, AHG was inactivated (e.g., from washing error) and result is invalid - must repeat). Biosafety and waste: gel cards contain glass microtubes (fragile - handle carefully; broken cards are sharps hazard + biohazard); all patient samples and used cards are potentially infectious (bloodborne pathogens - HIV, HBV, HCV, syphilis, etc.); use proper PPE (lab coat, gloves, safety glasses/goggles); handle in biosafety cabinet if available; decontaminate centrifuge rotor and chamber after spills (70% ethanol or appropriate disinfectant); dispose of used gel cards, reagents, and contaminated materials as biohazard waste (red bag, sharps container for broken glass); follow institutional biosafety protocols and applicable regulations (OSHA Bloodborne Pathogens Standard, CLIA, CAP). Quality control: run positive and negative control cards per shift or per batch (verify reagents, centrifuge, technique are working; positive control should give expected reaction (e.g., anti-D + D-positive cells = 4+), negative control should be 0 (e.g., anti-D + D-negative cells = 0); if controls fail, investigate (reagent expiration, centrifuge speed, technique, incubation) and do not report patient results until controls pass); maintain reagent and cell quality (check expiration dates, proper storage, no hemolysis/discoloration); participate in proficiency testing (CAP, AABB, or local proficiency testing program for blood banking) to verify ongoing accuracy. Regulatory: gel card assays and centrifuges used for clinical blood banking must comply with applicable regulations (FDA 510(k) clearance for IVD use in US, CE IVD marking in EU, NMPA registration in China; AABB standards for blood banks; CLIA/CAP for clinical laboratories; operator must be properly trained and certified (e.g., Medical Technologist, Medical Laboratory Scientist with blood bank training); SOPs must be followed and documented; all test results must be recorded and retained per regulatory requirements (typically 10+ years for blood bank records).