When selecting a vacuum mixing and defoaming mixer, the most easily misunderstood specification is the "processing capacity", while vacuum level, rotation speed, temperature control and material properties are frequently overlooked. Take SIENOX planetary vacuum mixing and defoaming mixers as examples: SIE-MIX60 / SIE-MIX80 handles 0–300 mL per batch, and SIE-MIX1000plus handles 0–1000 mL per batch. The standard vacuum level is -98 kPa (-100 kPa optional). Temperature control is an optional customized module, not standard. The following elaborates on these five parameters one by one.

Parameter 1: Batch Processing Capacity — Confirm batch volume first, then daily batches

• SIE-MIX60 / SIE-MIX80: 0–300 mL per batch, suitable for laboratory sampling, small-batch multi-formula and R&D verification scenarios.

• SIE-MIX1000plus: 0–1000 mL per batch, suitable for pilot testing and small-batch production.

Calculation method: Daily processing demand ÷ expected batch quantity = required batch capacity. For example, if 3 L is required per day with 4 batches planned, the required batch volume is about 750 mL, and SIE-MIX1000plus can meet the requirement with margin. Note that the nominal processing capacity is not equal to the tank volume. Space must be reserved for material foaming during feeding; refer to the equipment manual and on-site test results for details.

For the same 300 mL range: SIE-MIX60 adopts gear transmission, while SIE-MIX80 uses belt transmission (lower operating noise, only belt replacement required for maintenance). They share the same core parameters, and users can choose according to laboratory environment requirements.

Parameter 2: Vacuum Level — Determines whether bubbles can be fully removed

Vacuum level serves as the driving force for defoaming. The lower the air pressure inside the chamber, the larger the pressure difference inside and outside the bubbles in the material, enabling faster bubble expansion and release. The three mainstream SIENOX models come with a standard vacuum level of -98 kPa, with an optional -100 kPa.

Two practical tips:

1. The standard vacuum level is the upper limit of the equipment. The process vacuum should be set according to materials: high-viscosity pastes can adopt higher vacuum, while low-viscosity liquids may foam violently and overflow the chamber near the ultimate vacuum, so staged pressure reduction is recommended;

2. When comparing equipment parameters, confirm consistent reference standards (gauge pressure / absolute pressure) to avoid misinterpretation caused by different marking methods. Some data on the market mark -98 kPa as -95, -99 or even -100 kPa as standard; refer to the official parameter page of the manufacturer.

Parameter 3: Rotation Speed & Revolution / Rotation — Determines mixing uniformity

The mixing capability of planetary equipment comes from the combined planetary revolution and rotation movement. All three models feature stepless adjustable speed: SIE-MIX60 / SIE-MIX80: 0–3000 RPM, SIE-MIX1000plus: 100–2000 RPM. Do not only focus on the maximum speed during selection. Adjustable speed is more critical. Suitable speeds vary for different viscosities and loading volumes. The common practice is to start at low speed and gradually increase after observing material flow status (typical reference values, subject to on-site test results).

Parameter 4: Temperature Control — Note: This is an optional item

Temperature control is an optional customized module, not standard configuration. Whether it is required depends on whether the material is temperature-sensitive. Some high-viscosity materials experience temperature rise under long-time high-speed operation, which affects viscosity and defoaming performance. Many materials can be processed at room temperature. Heating and cooling assemblies can be installed on SIE-MIX1000plus according to process requirements.

Recommended workflow: Complete process verification (such as sample testing) first, confirm temperature control is truly required, then decide to add the module, instead of choosing fully equipped configurations blindly.

Parameter 5: Material Properties — Viscosity, Solid Content, Particle Size

Clarify these three indicators before selection:

Providing these three sets of data to the equipment supplier for sample testing is more effective than checking any parameter sheet. SIENOX offers free incoming sample testing, you only need to send samples for verification.

Quick Reference Table of Five Parameters

Typical Process Workflow for Selection Verification

Background: Uncertain whether to choose 300 mL or 1000 mL model and required vacuum curve before purchase.

Difficulty: Material performance cannot be judged merely from parameter sheets, blind selection may lead to oversized or undersized equipment.

Selection Principle: Running tests with real materials on real equipment is the only low-cost verification method.

Process Steps:

1. Collect three core material data (viscosity, solid content, particle size) and target batch volume;

2. Select candidate models according to target batch volume (300 mL → SIE-MIX60 / SIE-MIX80; 1000 mL → SIE-MIX1000plus);

3. Apply for free incoming sample testing and send material samples;

4. Confirm working conditions with technical team: loading volume, vacuum stages, rotation speed, holding time;

5. Obtain test results (comparison before and after defoaming), confirm performance and cycle time, then finalize the model.

Comparison: Selection changes from "guessing by parameter sheets" to "determining by measured data", avoiding mismatched capacity or vacuum level after purchase.

FAQ: 5 Common Questions about Defoaming Mixer Selection

Q1: What are the core differences between SIE-MIX60 and SIE-MIX1000plus? Batch capacity and speed range: SIE-MIX60: 0–300 mL, 0–3000 RPM; SIE-MIX1000plus: 0–1000 mL, 100–2000 RPM. They share the same vacuum level (standard -98 kPa, optional -100 kPa).

Q2: Which model for 5 L daily processing? Calculate batch volume by daily demand ÷ batch quantity, then refer to 300 mL / 1000 mL options and reserve foaming space; run sample testing to confirm cycle time if uncertain.

Q3: Is higher vacuum always better? The standard vacuum is the upper limit of equipment capability. Vacuum should be set by stages according to materials; low-viscosity materials may foam violently and overflow near ultimate vacuum.

Q4: Is temperature control required for defoaming mixers? Temperature control is an optional customized module, not standard. It is recommended to verify process demand via sample testing before adding this option.

Q5: Can I test before purchase? Yes. SIENOX provides free incoming sample testing and one-on-one technical solution service. You can send samples to get measured comparison results before and after defoaming.