The PR1001-R-1000 is the Red Dye variant of the Accuris Taq 2X Master Mix at the 1,000-reaction pack format, same Taq + buffer + dNTPs + MgCl₂ formulation as the base PR1001-1000, with inert red gel loading dye pre-formulated in the master mix for direct gel loading after PCR (no separate loading-dye supplementation step). The PCR product is ready to load directly onto the gel as soon as cycling completes, a meaningful workflow ergonomic for production PCR-to-gel benches and high-throughput screening labs. Ships as 20 × 1.25 mL tubes at the same $393 list price as the dye-free PR1001-1000. Red Dye is bundled at no price premium.
Key Specifications
| SKU | PR1001-R-1000 |
| Type | Taq 2X Red Dye Master Mix (pre-formulated with red gel-loading dye) |
| Reactions per pack | 1,000 reactions (pack format: 20 × 1.25 mL tubes) |
| Concentration | 2× master mix |
| Polymerase | Taq DNA Polymerase (standard, non-hot-start) |
| Buffer composition | PCR enhancers, 2 mM dNTPs, 6 mM MgCl₂, inert red gel loading dye |
| Direct gel loading | Yes. Load PCR product directly onto gel after cycling, no separate loading-dye step |
| Smaller pack sister | PR1001-R-200 (200 reactions, 4 × 1.25 mL) |
| Dye-free sister | PR1001-1000 (same chemistry without Red Dye, same price) |
| Hot Start + Red Dye | PR1001-HSR-1000 (Hot Start + Red Dye combined master mix) |
| List price | $393 |
| Returns | Non-returnable. Perishable reagent per Accuris reagent-return policy |
Why Red Dye in the Master Mix
The pre-formulated red gel loading dye delivers two workflow ergonomic benefits:
- Direct gel loading after PCR. When cycling completes, the PCR product is already prepared for gel loading. No separate loading-dye supplementation step (no dispensing 6× loading dye into each PCR tube before loading on the gel). The operator pipettes directly from the PCR tube to the gel well.
- Visual reaction tracking during setup. The red color is visible during master-mix dispensing and reaction setup, providing a visual indicator that helps detect missed wells or pipetting errors during high-throughput reaction setup.
The dye is inert. It doesn't interfere with PCR cycling, polymerase activity, or downstream analysis. The molecular weight of the dye is positioned for standard PCR product visualization: the dye migrates in the gel at a position that is visually trackable during the run without overlapping with PCR products in typical sizing ranges.
Red Dye vs Dye-Free: When to Pick Each
| Variant | Direct gel load? | Use case |
| PR1001-R-1000 (this product) | Yes | Production PCR-to-gel benches, high-throughput screening, teaching labs running gel-electrophoresis exercises after PCR |
| PR1001-1000 (no dye) | No (separate loading-dye supplementation step required) | Workflows where PCR product is not loaded on a gel (e.g., PCR product feeds directly into a downstream cloning, sequencing, or qPCR-quantitation step where the dye would interfere) |
Pick the Red Dye variant when the PCR-to-gel workflow is the standard endpoint. Most routine PCR analytical workflows fall into this category. Pick the dye-free PR1001-1000 when downstream processing (cloning ligation, sequencing prep, fluorescent-detection qPCR) requires a clean PCR product without loading-dye interference.
Same price ($393) on both variants: choice is purely workflow-ergonomic, not cost-driven.
Pack-Size Family: PR1001-R Red Dye Master Mix
| SKU | Reactions | Pack format | Use case |
| PR1001-R-200 | 200 | 4 × 1.25 mL | Smaller pack (pilot or occasional gel-loading workflows) |
| PR1001-R-1000 (this product) | 1,000 | 20 × 1.25 mL | Mid-throughput / production PCR-to-gel workflow |
Reagent Composition
Per the Accuris Life Science Reagents Catalog, each PR1001-R-1000 pack includes:
- Taq DNA Polymerase (pre-formulated in 2× master mix)
- Buffer. PCR enhancers, 2 mM dNTPs, 6 mM MgCl₂
- Inert red gel loading dye. Formulated at the standard loading-dye concentration
Standard reaction setup: combine 25 µL of master mix + 25 µL of (primers + template + water) in a 50 µL reaction. After cycling, load PCR product directly onto the gel. The red dye is already at the standard loading-dye concentration in the 50 µL reaction.
Application Profile
Per the Accuris Life Science Reagents Catalog, Taq 2X Master Mix applications (which apply to the Red Dye variant as well):
- Colony PCR. Direct PCR from bacterial colony for clone screening, gel-load directly to confirm clone insert size
- Fast PCR. Short-amplicon PCR followed by direct gel analysis
- Genotyping. Endpoint PCR followed by direct gel-load for SNP / indel call
- High-throughput PCR. Production-scale screening with PCR-to-gel readout
- Routine PCR. Any general-purpose endpoint PCR feeding into gel-electrophoresis analysis
The Red Dye master mix is specifically optimized for the PCR-to-gel workflow, the standard endpoint in most analytical PCR protocols.
When to Pick This Pack
Order PR1001-R-1000 when:
- Production PCR-to-gel workflow. Labs running endpoint PCR with gel-electrophoresis as the readout at mid-to-high throughput
- Genotyping production benches. Labs running cohort genotyping where every PCR product is gel-analyzed
- Teaching labs. Molecular-biology teaching where direct-load saves operator time in cohort exercises
- High-throughput screening. Production-scale screening workflows where the time saved on direct-load operations is meaningful across hundreds of reactions
- Multi-bench shared inventory. Institutional procurement of standardized PCR master mix across multiple gel-loading benches
Ordering & Configuration
Storage & handling. Per Accuris kit instructions: typical PCR master-mix storage at −20 °C with limited freeze-thaw cycle tolerance. The 20-tube format supports rotating tubes through active use while keeping the rest in deep storage.
Downstream-workflow verification. Critical at order: confirm the PCR product is loaded on a gel (Red Dye variant is right) vs fed into cloning / sequencing / fluorescent qPCR (dye-free PR1001-1000 is right).
Hot-start variant consideration. For multiplex / GC-rich / low-copy workflows that also benefit from direct gel-loading, see PR1001-HSR-1000 (Hot Start + Red Dye combined).
Returns. Per the universe price-list category header: reagent products including PCR master mixes are non-returnable due to perishable nature.
Confirm at quote: workflow downstream-step (gel-load vs cloning / sequencing / qPCR), pack-size match (200 vs 1,000 reaction), Hot Start variant consideration, shipping conditions (cold-chain), and lead time.
Warranty: Per Accuris Life Science Reagents standard kit warranty terms. Confirm at quote.
Accuris PR1001-R Red Dye Master Mix family:
- PR1001-R-200: 200 reactions, 4 × 1.25 mL
- PR1001-R-1000 (this product): 1,000 reactions, 20 × 1.25 mL
- PR1001-HSR-200 / PR1001-HSR-1000: Hot Start + Red Dye combined master mix
- PR1001-1000 (dye-free), same chemistry without Red Dye for non-gel downstream workflows
Pick the Red Dye variant for PCR-to-gel workflows; pick dye-free for non-gel downstream processing.
