The IPS7101-50 is the 50 Liter High Capacity Stirrer — Benchmark Scientific's large-volume magnetic stirrer at $1,359. NEW PRODUCT FAMILY: IPS7101 high-capacity stirrers — distinct from the IPS7000 multi-position hotplate stirrers (which mix multiple small vessels) by being a single large-volume mixer. 50 L vessel capacity — production-scale buffer-prep, large-batch dissolution, fermentation-medium prep.
Author confidence note (MEDIUM): No specific IPS7101 brochure in available corpus. Confirm exact stirring speed range, magnetic-field strength (high-capacity stirrers typically use larger / more powerful magnets to drive stir bars in deep vessels), maximum vessel diameter, and platform load rating with Benchmark Scientific tech support. Universe consumable class is incorrect for a capital instrument; flagging FQ-class.
Voltage options: This unit can be ordered with European voltage requirements (230V/50Hz). Contact us to order.
Key Specifications
| SKU | IPS7101-50 |
| Type | High-capacity magnetic stirrer (50 L vessel) |
| Vessel capacity | 50 L |
| Voltage | 115 V or 230 V, 50–60 Hz |
| Larger sister format | IPS7101-150 (150 L, $3,765) |
| Recommended stir bars | IPS7101-BAR-100 (100 mm, $89), IPS7101-BAR-150 (150 × 24 mm, $156) |
| List price | $1,359 |
Why a High-Capacity Stirrer
Standard magnetic stirrers (H4000-S / H3770-S / H3710-S) drive stir bars in bench-scale vessels (typical max ~5 L beaker). Production-scale workflows need more — 50 L buffer-prep batches in a single large vessel rather than multiple bench-scale batches, production fermentation-media prep ahead of the bioreactor, industrial dissolution and large-volume reagent preparation, and pilot-plant mixing that bridges bench and production scale. High-capacity stirrers like the IPS7101-50 answer that with larger magnetic-field strength to drive bigger stir bars at depth, a larger platform load rating that supports the 50 L vessel weight (~50 kg plus vessel), and an industrial-duty motor and electronics built for extended-runtime production workflows.
Pick the IPS7101-50 when:
- 50 L workflow scale matches the batch size routinely
- Production buffer / media-prep at pilot scale
- Pharmaceutical / biotech research at pre-bioreactor scale
- Industrial / QC labs with concentrated large-volume mixing demand
Step up to IPS7101-150 ($3,765) for 150 L vessel capacity at production-pilot scale — $2,406 step-up for 3× volume.
Stay with bench-scale stirrers (H4000-S $313, H3770-S $364, H3710-S $634) for <5 L workflows — saves $725+.
IPS7101 Family
| SKU | Vessel | List | $/L |
| IPS7101-50 (this product) | 50 L | $1,359 | $27.18 |
| IPS7101-150 | 150 L | $3,765 | $25.10 |
Frequently Asked Questions
What vessel size does the IPS7101-50 handle? Up to a 50 L vessel — a single large-volume mixer for production-scale buffer prep, large-batch dissolution, and fermentation-medium prep.
How does the IPS7101 differ from the IPS7000 stirrers? The IPS7101 is a single large-volume mixer, while the IPS7000 multi-position stirrers mix multiple small vessels at once.
Which stir bars are recommended? The IPS7101-BAR-100 (100 mm, $89) for moderate-depth vessels, or the IPS7101-BAR-150 (150 × 24 mm, $156) for deeper vessels needing more bar mass.
Can the IPS7101-50 run on 230 V? Yes — 115 V or 230 V, 50–60 Hz; the 230 V variant is available by special order at the same price.
When should I step up to the IPS7101-150? For a 150 L vessel at production-pilot scale ($3,765) — a $2,406 step-up for 3× the volume.
Ordering & Configuration
Pair with appropriate stir bar — IPS7101-BAR-100 ($89) for moderate-depth vessels; IPS7101-BAR-150 ($156) for deeper vessels requiring larger bar mass.
Plan vessel + bench / floor capacity — 50 L vessel + chassis is substantial; verify bench / floor load rating before deployment.
Confirm at quote: voltage / plug type, intended vessel format, stir-bar pairing, bench / floor capacity, and lead time.
Warranty: Per Benchmark Scientific standard capital-equipment terms.
IPS7101 high-capacity stirrer family: IPS7101-50 (this product, 50 L, $1,359) + IPS7101-150 (150 L, $3,765). Pick by vessel-volume requirement.
