Spin Tech centrifuge selection starts with matching published capacity to your target load, run schedule, and available utilities. The STP-1500 and STP-3000 use planetary-style rotation and program-based processing, but their listed capacities and electrical requirements differ. Choose against the actual vessel set, working fill, and batches per shift, not the model name alone.
Spin Tech centrifuge capacity: STP-1500 vs STP-3000
The STP-1500 product listing states a 1,400 mL maximum using two 700 g cups. The STP-3000 page lists 1,400 mL × 2, or 2,800 mL maximum, and separately lists 2,850 mL per SUS304 cup. Because maximum capacity, nominal cup size, and validated working fill are different measures, confirm approved fill, vessel configuration, and rated load for the material. Plan to the smallest confirmed limit, not the largest number on a product page.
That supports the STP-3000 as the higher-capacity option, but liters alone do not determine throughput. Loading, run time, quality checks, cleaning, changeovers, material density, and recipe all matter. Confirm the batch range in writing for your material and selected cups before sizing from volume alone.
Spin Tech centrifuge specifications that affect facility fit
- STP-1500: Listed at 200–2,500 rpm for revolution and rotation, with a fixed rotation-speed ratio; AC 110 V, 50/60 Hz, 13 amps; vacuum degree 0.5 ± 0.5 kPa.
- STP-3000: Listed at 2,500 rpm for both directions; three-phase 208 V, 24 amps; vacuum up to 0.5 kPa within 100 seconds.
- Shared program details: Both list 30 minutes of continuous running and memory for 20 program sets. The STP-1500 page lists five speeds and times; the STP-3000 page lists a five-step program.
Both listings present configurations with or without a 10 CFM scroll pump. Confirm the selected configuration, exhaust arrangement, and utility connections in the current quotation and submittal. Similar maximum speeds alone do not establish that the models are equivalent.
Match capacity to your workflow
Start with batch size, not daily target. Record typical and peak volume, recipe changes, run times, and time for loading, unloading, and quality checks. Divide the shift into realistic cycles and estimate runs per hour using a representative trial. Keep the stated 30-minute continuous-running limit and manufacturer duty-cycle guidance in view.
- For small, frequent batches, check whether the STP-1500's working capacity fits without excessive changeovers.
- For larger batches, confirm whether the STP-3000's published capacity is usable with the selected cups and material.
- For variable loads, compare both models across the range and identify recipes needing a separate vessel or handling step.
Compare representative batch sizes and quality at actual operating conditions. Document sample load, cup set, program, cycle time, and acceptance criteria so purchasing, engineering, and operations use the same baseline.
Spin Tech centrifuge installation and safe operation
Electrical service may be the first constraint: the STP-1500 page lists AC 110 V, 50/60 Hz, 13 amps; the STP-3000 page lists three-phase 208 V, 24 amps. Have a qualified electrical professional verify the nameplate, circuit, disconnect, grounding, and local-code needs for the purchased configuration. A compatible receptacle alone does not establish adequate upstream service.
Confirm floor support, leveling or anchoring, lid and service clearance, vibration controls, safe exhaust routing, and placement of utility modules. Follow manufacturer instructions for materials and cleaning, and train operators to load evenly, close interlocks, and verify the cycle before operation. Never bypass guards, sensors, door locks, or emergency stops.
For U.S. general industry, OSHA's 29 CFR 1910.212 machine-guarding standard addresses hazards including rotating parts and guard installation. Review applicable requirements with safety and engineering leads; the standard is background, not a certification of either model.
Choosing between the STP-1500 and STP-3000
The STP-1500 may fit operations whose validated batches are within its published limit and whose electrical service meets the listing. The STP-3000 may suit larger confirmed working batches if the facility supports its three-phase power. These are screening rules, not performance guarantees; process characteristics and acceptance criteria determine the answer.
Before approval, compare current specifications, containers, pump configuration, service expectations, installation needs, and lead time. Confirm maximum working fill and recommended run conditions in writing, and verify which features or accessories are included. Use representative tests to establish cycle time and quality, then compare the daily workflow rather than headline capacity.
Review the confirmed STP-1500 product listing and STP-3000 product listing before quoting current configurations. Matching capacity, electrical service, run limits, and workflow gives engineering, operators, and purchasing a durable basis for selection.
