UltraFlux® Z A-4004 | 0.2mL 8-Strip PCR Tubes with Optically-Clear Flat Hinged Caps, Clear — 125 Strips/Pack

Product Description

The LIGHT LABS A-4004 (SSI Bio UltraFlux® Z, manufacturer catalog # 3235-00) is a 0.2mL 8-strip PCR tube with optically-clear flat hinged caps — strips of hinged attached caps prevent accidents common with separate caps. Optically-clear, flat caps for qPCR. Uniform thin walls. Manufactured from high-quality, virgin polypropylene to ensure purity and provide excellent optical clarity. Certified free of detectable RNase, DNase, DNA, and PCR inhibitors. Clear tubes. Packaging: 125 strips per unit, 10 units per case. Also available in rainbow color A-4004-Z.

UltraFlux® Z — Hinged Attached Caps for Secure, Integrated Sealing The defining design feature of the UltraFlux® Z is its hinged cap attachment — the flat optically-clear cap is permanently attached to the tube strip via a flexible hinge, eliminating the separate cap strip entirely. Strips of hinged attached caps prevent accidents common with separate caps. Separate cap strips are one of the most common sources of workflow disruption in high-throughput PCR labs — caps are easily misplaced, mixed between strips of different colors or formats, and knocked off tubes during thermal cycler loading and unloading. The integrated hinged design of the UltraFlux® Z eliminates all of these failure modes by keeping each cap permanently attached to its corresponding tube — preventing cross-tube cap mixing, cap loss, and the contamination risk of uncapped tubes during PCR setup.

Understanding the UltraFlux® Z vs. UltraFlux® i — Choosing the Right SSI Bio 8-Strip: The SSI Bio UltraFlux® PCR strip tube lineup includes two distinct 0.2mL 8-strip formats — choosing the right one depends on your thermal cycler format and cap preference:

Optically-Clear Flat Caps — Ideal for qPCR Fluorescence Detection Optically-clear, flat caps for qPCR. The optically-clear flat cap design of the A-4004 / 3235-00 is specifically optimized for real-time qPCR applications — the flat cap geometry provides a uniform, distortion-free optical surface directly above the reaction well that allows consistent, accurate fluorescence detection by the qPCR instrument's optical system. Flat caps are the preferred format for qPCR instruments that read from above the cap — including instruments from Bio-Rad, Applied Biosystems, Roche, and other major qPCR platform manufacturers.

Uniform Thin Walls — Efficient Thermal Transfer for Consistent PCR Results Uniform thin walls. The uniform thin-wall construction of the A-4004 / 3235-00 minimizes the thermal resistance between the thermal cycler block and the PCR reaction — allowing the reaction to follow programmed cycling temperatures precisely during denaturation, annealing, and extension steps. Uniform wall thickness across all 8 wells ensures equivalent thermal performance in every tube of the strip — critical for reproducible inter-tube results when comparing conditions across a single strip.

High-Clarity Virgin Polypropylene — Optical Clarity and Sample Integrity Manufactured from high-quality, virgin polypropylene to ensure purity and provide excellent optical clarity. SSIbio uses high-clarity, ultra-pure polypropylene that meets FDA 21 CFR 177.1520 and USP Class VI. The high-clarity polypropylene allows direct visual inspection of reaction contents — confirming sample loading, checking for bubbles, and verifying master mix color before cycling. The virgin polypropylene construction ensures freedom from recycled resin contaminants, processing aids, and extractables that could inhibit PCR or interfere with downstream analysis.

Certified Purity — Full PCR Qualification Panel Certified free of detectable RNase, DNase, DNA, and PCR inhibitors. The complete purity certification qualifies the A-4004 / 3235-00 for all standard PCR, RT-PCR, and qPCR applications — including sensitive RNA workflows, single-copy DNA amplification, and any molecular biology application where tube material contamination could cause false results or assay failure.

Manufactured in the USA — ISO 9001:2015 Quality Assurance SSI Bio products are manufactured in a state-of-the-art facility in Lodi, California with 1,500 square meters meeting or exceeding ISO 8 / Class 100,000 cleanroom standards. All processes are controlled under a certified ISO-9001:2015 quality assurance system. Made in the USA — an important distinction between SSI Bio and overseas manufacturers of PCR consumables.

Compatible Replacement — Cross-Reference Guide

The LIGHT LABS A-4004 (SSI Bio 3235-00 UltraFlux® Z) is a direct compatible replacement for 0.2mL 8-strip PCR tubes with flat caps from several major manufacturers:

• Bio-Rad TLS-0851 — Bio-Rad 0.2mL 8-tube PCR strip with flat optically clear caps
• Thermo Fisher AB-0266 — ABgene 0.2mL 8-strip PCR tubes with flat caps
• Eppendorf 0030124359 — Eppendorf PCR 8-tube strip 0.2mL with flat caps
• QIAGEN 981103 — QIAGEN Strip Tubes and Caps, 0.2mL, 8-strip with flat caps

Competitor brand names and catalog numbers are referenced for cross-referencing purposes only. Compatibility should be verified for your specific thermal cycler and protocol.

Key Features

• LIGHT LABS Cat # A-4004 / SSI Bio Manufacturer SKU: 3235-00
• 0.2mL 8-strip PCR tube with optically-clear flat hinged caps
• UltraFlux® Z design — hinged attached caps prevent separate cap accidents
• Optically-clear flat caps — optimized for qPCR fluorescence detection from above
• Uniform thin walls — efficient thermal transfer for consistent PCR results
• High-clarity virgin polypropylene — FDA 21 CFR 177.1520 / USP Class VI
• Clear tube color — standard (also available in rainbow colors A-4004-Z)
• Certified RNase-free, DNase-free, DNA-free, and PCR Inhibitor-free
• Compatible with standard 0.2mL PCR thermal cyclers
• ISO 9001:2015 quality assurance
• Made in the USA
• Non-sterile
• 125 strips per unit / 10 units per case (1,250 strips per case)

Supported Applications Conventional PCR, real-time qPCR, RT-PCR, hot-start PCR, genotyping, SNP analysis, high-resolution melting (HRM), colony PCR, endpoint PCR for gel analysis, and any standard 0.2mL 8-strip PCR application requiring flat optically-clear hinged caps with uniform thin-wall thermal performance.

Technical Specifications