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分体设计·灵活检测

ZW-LotusVF3S与ZW-STV3A微生物限度过滤系统

Split Design · Flexible Testing 

— ZW-LotusVF3S and ZW-STV3A Microbial Limit Filtration Systems

当一体式设备无法满足多样化检测场景时，分体式设计成为破局之道。ZW-LotusVF3S与ZW-STV3A两款微生物限度过滤系统，将泵与过滤支架分离，以316L不锈钢材质和一次性滤杯协同方案，重新定义了灵活检测的标准。本文将深入解析两款系统的设计理念、性能差异与选型策略。

When integrated instruments cannot meet the demands of diverse testing scenarios, split design emerges as the solution. The ZW-LotusVF3S and ZW-STV3S microbial limit filtration systems separate the pump from the filtration bracket, redefining the standard for flexible testing through 316L stainless steel construction and disposable cup integration. This article provides an in-depth analysis of both systems' design philosophy, performance differences, and selection strategy.

一、分体式设计理念：为何要"拆开"？

| The Split Design Philosophy: Why "Separate"?

传统微生物限度检查仪采用一体式结构——泵、过滤头、控制系统集成在同一机身内。这种设计在标准化检测场景中表现良好，但在实际应用中暴露出几个局限：

Traditional microbial enumeration systems employ an integrated structure — pump, filtration heads, and control system housed within a single body. While this design performs well in standardized testing scenarios, it reveals several limitations in practice:

清洁死角难以避免。 一体式机身的内部管路和泵腔在长期使用后容易残留样品基质和微生物，而整机拆卸清洁既不现实也不彻底。分体式设计将过滤支架与泵分离，支架可独立拆卸、清洗甚至湿热灭菌，彻底消除清洁死角。

Unavoidable cleaning dead spots. The internal tubing and pump chamber of integrated units inevitably retain sample matrices and microorganisms after prolonged use, yet full disassembly for cleaning is impractical and incomplete. Split design separates the filtration bracket from the pump, allowing the bracket to be independently removed, cleaned, and even autoclaved, eliminating cleaning dead spots entirely.

灵活性不足。 一体式设备的过滤头数量和规格固定，无法根据检测需求灵活调整。分体式系统的支架可更换，用户可根据样品量选择三联或六联支架，甚至更换不同规格的滤杯适配器。

Insufficient flexibility. Integrated instruments have fixed filtration head counts and specifications that cannot be adjusted to meet varying testing demands. Split system brackets are interchangeable, allowing users to select triple or sextuple configurations or even swap different cup adapter specifications based on sample volume.

维护成本高。 一体式设备中任何一个部件故障都可能导致整机停机。分体式设计中，泵和支架各自独立，故障时可单独更换或维修，降低维护成本和停机时间。

High maintenance costs. In integrated equipment, failure of any single component can halt the entire unit. In split design, the pump and bracket operate independently — a faulty component can be individually replaced or repaired, reducing maintenance costs and downtime.

一次性耗材协同受限。 随着一次性滤杯在微生物检测中的普及，一体式设备的固定过滤头设计难以完全适配新型一次性耗材。分体式支架专为配合一次性滤杯而设计，从结构层面保证了耗材的兼容性和密封性。

Limited consumable compatibility. As disposable filter cups gain popularity in microbial testing, the fixed filtration head design of integrated instruments cannot fully accommodate new disposable consumables. Split brackets are specifically designed to work with disposable cups, ensuring consumable compatibility and sealing performance at the structural level.

ZW-LotusVF3S和ZW-STV3A正是基于这一理念开发的两款分体式系统，分别定位于"高性能"和"轻便经济"两个细分市场。

The ZW-LotusVF3S and ZW-STV3S are two split-design systems developed based on this philosophy, targeting the "high-performance" and "lightweight economical" market segments respectively.

二、ZW-LotusVF3S：德系动力+316L精钢

| ZW-LotusVF3S: German Engineering + 316L Steel

产品概述 | Product Overview

ZW-LotusVF3S是最新一代分体式微生物检查过滤系统，由ZW-Lotus50P德国隔膜滤泵和ZW-Lotus3A过滤支架组成。系统结构简单、拆装方便、清洁无死角，配合ZW-LotusCNX系列一次性使用过滤器，极大降低了操作过程中的微生物交叉污染风险。

The ZW-LotusVF3S is the latest generation split-design microbial filtration system, comprising the ZW-Lotus50P German diaphragm pump and the ZW-Lotus3A filtration bracket. The system features a simple structure, easy assembly and disassembly, and cleaning without dead spots. When paired with the ZW-LotusCNX series disposable filters, it significantly reduces the risk of microbial cross-contamination during operation.

核心配置

Core Configuration

德国隔膜滤泵（ZW-Lotus50P）

•电源：AC 220V/50Hz

•功率：60W

•流量：1000ml/min

•噪音：<60dB(A)

•排液管：Φ10mm

German Diaphragm Pump (ZW-Lotus50P)

•Power supply: AC 220V/50Hz

•Power: 60W

•Flow rate: 1000 ml/min

•Noise: <60 dB(A)

•Drainage tube: Φ10mm

德国进口隔膜泵是ZW-LotusVF3S的核心动力单元。1000ml/min的流量在三款分体式产品中最高，适合大体积样品的快速过滤。<60dB(A)的静音设计使操作人员能在舒适的环境下进行长时间批量检测，这对需要连续处理大量样品的实验室尤为重要。

The German-imported diaphragm pump is the core power unit of the ZW-LotusVF3S. Its 1000 ml/min flow rate is the highest among the split-design products, making it ideal for rapid filtration of large-volume samples. The <60 dB(A) quiet design allows operators to conduct extended batch testing in a comfortable environment — particularly important for laboratories that need to process large sample volumes continuously.

316L不锈钢过滤支架（ZW-Lotus3A）

•尺寸：380×170×122mm

•重量：3kg

•材质：316L不锈钢

•滤杯规格：100mL/250mL

•滤膜规格：47/50mm

•滤膜孔径：0.45μm

316L Stainless Steel Filtration Bracket (ZW-Lotus3A)

•Dimensions: 380×170×122mm

•Weight: 3kg

•Material: 316L stainless steel

•Cup specifications: 100mL/250mL

•Membrane specifications: 47/50mm

•Membrane pore size: 0.45μm

316L不锈钢是医疗和制药领域的优选材质，其低碳含量和添加的钼元素赋予其优于304不锈钢的耐腐蚀性能，尤其在含氯环境（如海水、含氯消毒剂环境）中表现突出。对于需要频繁湿热灭菌的过滤支架，316L的耐腐蚀性意味着更长的使用寿命和更低的更换频率。

316L stainless steel is the preferred material in medical and pharmaceutical applications. Its low carbon content and added molybdenum provide superior corrosion resistance compared to 304 stainless steel, particularly in chloride-containing environments (such as seawater or chlorine-based disinfectant environments). For filtration brackets that require frequent autoclaving, 316L's corrosion resistance means longer service life and lower replacement frequency.

独特设计亮点

Design Highlights

•一次性滤头协同设计：滤杯内配有一次性滤头，无需火焰灭菌，直接更换即可进行下一个样品过滤，大幅降低交叉污染风险

•防漏液排放设计：滤杯与滤头间独特的防漏拼接设计，有效避免滤膜周边被污染，确保检测结果的准确性

•独立控制：三个滤头可独立控制，也可同时控制，灵活适配不同检测方案

•支架可更换清洗：过滤支架分离式设计，可独立拆卸清洗或更换

•Disposable filter head integration: Each cup comes with a disposable filter head — no flame sterilization needed, simply replace for the next sample, dramatically reducing cross-contamination risk

•Anti-leakage drainage design: The unique anti-leak splice design between cup and filter head effectively prevents membrane perimeter contamination, ensuring test result accuracy

•Independent control: Three filter heads can be controlled individually or simultaneously, flexibly adapting to different testing protocols

•Removable bracket: The split bracket design allows independent removal for cleaning or replacement

三、ZW-STV3A：英系品质+轻便经济

 | ZW-STV3A: British Quality + Lightweight Economy

产品概述

Product Overview

ZW-STV3A由ZW-Lotus48P英国隔膜泵和ZW-STV3A过滤支架组成，结构简单、拆装方便、清洁无死角。如果说ZW-LotusVF3S是"高性能旗舰"，那么ZW-STV3A就是"轻便经济型"——在保持分体式设计核心优势的同时，以更轻的重量和更低的功耗满足常规检测需求。

The ZW-STV3A comprises the ZW-Lotus48P British diaphragm pump and the ZW-STV3A filtration bracket. It shares the same simple structure, easy assembly, and cleaning-friendly design as the VF3S. If the ZW-LotusVF3S is the "high-performance flagship," the ZW-STV3Ais the "lightweight economy model" — maintaining the core advantages of split design while meeting routine testing needs with lighter weight and lower power consumption.

核心配置

Core Configuration

英国隔膜泵（ZW-Lotus48P）

•电源：AC 220V/50Hz

•功率：35W

•流量：800ml/min

•排液管：Φ10mm

British Diaphragm Pump (ZW-Lotus48P)

•Power supply: AC 220V/50Hz

•Power: 35W

•Flow rate: 800 ml/min

•Drainage tube: Φ10mm

英国进口隔膜泵提供800ml/min的稳定流量，虽然略低于德国泵的1000ml/min，但对于大多数常规微生物限度检测场景已经足够。35W的低功耗意味着更低的运行成本和更小的热量产生，适合长时间连续工作。

The British-imported diaphragm pump delivers a stable 800 ml/min flow rate. While slightly lower than the German pump's 1000 ml/min, it is sufficient for most routine microbial limit testing scenarios. The 35W low power consumption means lower operating costs and less heat generation, suitable for prolonged continuous operation.

316L不锈钢过滤支架（ZW-STV3A）

•尺寸：320×110×100mm

•重量：2kg

•材质：316L不锈钢

•滤杯规格：100mL/250mL

•滤膜规格：47/50mm

•滤膜孔径：0.45μm

316L Stainless Steel Filtration Bracket (ZW-STV3A)

•Dimensions: 320×110×100mm

•Weight: 2kg

•Material: 316L stainless steel

•Cup specifications: 100mL/250mL

•Membrane specifications: 47/50mm

•Membrane pore size: 0.45μm

ZW-STV3A支架仅2kg，是全系列最轻的过滤支架，尺寸也更为紧凑。对于需要频繁移动设备或操作空间极为有限的实验室，这一轻量化设计具有显著的实用价值。

At just 2kg, the ZW-STV3A bracket is the lightest in the entire product line, with a more compact footprint. For laboratories that need to frequently relocate equipment or have extremely limited workspace, this lightweight design offers significant practical value.

设计特点

Design Features

•泵与支架分体式设计：过滤支架可湿热灭菌，彻底解决清洁死角问题

•多样化滤头选择：可选配多种样式滤头，既可使用反复灭菌杯，也可使用一次性杯，灵活适配不同预算和检测需求

•静音设计：操作舒适，适合长时间使用

•英国进口隔膜泵：无需抽滤瓶，直接排液，操作简便

•Pump-bracket split design: The filtration bracket can be autoclaved, thoroughly resolving cleaning dead spot issues

•Versatile filter head options: Multiple filter head styles available — compatible with both reusable sterilizable cups and disposable cups, flexibly adapting to different budgets and testing needs

•Quiet design: Comfortable operation suitable for extended use

•British-imported diaphragm pump: No vacuum flask needed, direct drainage for simplified operation

四、316L与304不锈钢：材质对比

| 316L vs. 304 Stainless Steel: Material Comparison

两款分体式系统均采用316L不锈钢过滤支架，而一体式系列（ZW-300S/Z/X）则采用304不锈钢机身。这一材质差异反映了分体式系统面向更高洁净度要求的定位。

Both split-design systems use 316L stainless steel filtration brackets, while the integrated series (ZW-300S/Z/X) uses 304 stainless steel bodies. This material difference reflects the split systems' positioning toward higher cleanliness requirements.

316L不锈钢中添加的钼元素显著提升了耐点蚀和耐缝隙腐蚀能力，尤其在含氯离子环境（如反复使用含氯消毒剂、湿热灭菌过程中的冷凝水）中表现优异。对于需要频繁湿热灭菌的分体式过滤支架，316L材质能保证更长的使用寿命和更稳定的表面光洁度，减少微生物附着风险。

The molybdenum added to 316L stainless steel significantly enhances resistance to pitting and crevice corrosion, particularly in chloride-containing environments (such as repeated use of chlorine-based disinfectants or condensate during autoclaving). For split filtration brackets that require frequent autoclaving, 316L material ensures longer service life and more stable surface finish, reducing the risk of microbial adhesion.

五、应用场景 | Application Scenarios

疾控系统：环境水质监测

Disease Control: Environmental Water Monitoring

疾控中心对空调冷却水、江河湖泊水的微生物监测通常涉及大量分散采样点。ZW-STV3S的轻量化设计（整机仅3kg）便于携带至不同采样点进行现场过滤，316L支架可湿热灭菌，适合野外条件下的清洁处理。ZW-LotusVF3S的1000ml/min高流量则适合大体积水样的快速过滤。

CDC centers' microbial monitoring of air conditioning cooling water and river/lake water typically involves numerous dispersed sampling points. The ZW-STV3S's lightweight design (entire system only 3kg) facilitates transport to different sampling points for on-site filtration, while the 316L bracket can be autoclaved for hygienic processing under field conditions. The ZW-LotusVF3S's 1000 ml/min high flow rate is suited for rapid filtration of large-volume water samples.

食品行业：原料与成品检测

Food Industry: Raw Material and Finished Product Testing

食品企业的原料验收和成品出厂检测对微生物指标有严格时限要求。两款分体式系统配合一次性滤杯使用，可实现"一个样品一套耗材"的零交叉污染检测模式。ZW-LotusVF3S的高流量适合饮料等大体积样品的快速过滤；ZW-STV3S的灵活滤头选择则适配不同黏度的食品基质。

Food companies' raw material acceptance and finished product release testing have strict time constraints on microbial indicators. Both split systems, when used with disposable cups, enable a "one sample, one consumable set" zero-cross-contamination testing mode. The ZW-LotusVF3S's high flow rate suits rapid filtration of large-volume samples like beverages, while the ZW-STV3S's flexible filter head options accommodate food matrices of varying viscosities.

化妆品行业：微生物限度检查

Cosmetics Industry: Microbial Limit Testing

化妆品微生物限度检查涉及水包油、油包水等多种乳化体系，部分样品富含脂质，对设备材质的耐腐蚀性要求较高。316L不锈钢支架在接触脂质样品后更易清洁，且能耐受化妆品行业中常用的含氯消毒剂，长期使用不易产生腐蚀斑点。

Cosmetic microbial limit testing involves various emulsion systems (oil-in-water, water-in-oil), with some samples rich in lipids, demanding higher material corrosion resistance. 316L stainless steel brackets are easier to clean after contact with lipid samples and can withstand the chlorine-based disinfectants commonly used in the cosmetics industry, resisting corrosion spots over long-term use.

制药行业：纯化水系统监测

Pharmaceutical Industry: Purified Water System Monitoring

制药企业纯化水系统的日常监测需要在多个用水点取样检测。分体式系统的便携性使检测人员可携带支架至各取样点进行即时过滤，避免样品运输过程中的微生物变化。一次性滤杯的使用确保每个取样点使用全新耗材，杜绝系统间交叉污染。

Daily monitoring of pharmaceutical purified water systems requires sampling at multiple use points. The portability of split systems allows testing personnel to carry the bracket to each sampling point for immediate filtration, preventing microbial changes during sample transport. Disposable cup usage ensures that each sampling point uses fresh consumables, eliminating cross-contamination between systems.

六、两款分体系统选型对比

| Comparison of the Two Split Systems

选型建议：

•样品量大、追求过滤速度→ 选ZW-LotusVF3S（1000ml/min德国泵）

•需要长时间批量操作、对噪音敏感→ 选ZW-LotusVF3S（<60dB静音设计）

•预算有限、检测量适中→ 选ZW-STV3S（经济型，整机仅3kg）

•需要频繁移动设备、操作空间极小→ 选ZW-STV3S（最轻最紧凑）

•检测场景多样、需要灵活切换滤头→ 选ZW-STV3S（多种滤头可选配）

Selection Recommendations:

•Large sample volumes, prioritizing filtration speed → ZW-LotusVF3S (1000 ml/min German pump)

•Extended batch operations, noise sensitivity → ZW-LotusVF3S (<60 dB quiet design)

•Limited budget, moderate testing volume → ZW-STV3S (economical, entire system only 3kg)

•Frequent equipment relocation, minimal workspace → ZW-STV3S (lightest and most compact)

•Diverse testing scenarios requiring flexible filter head switching → ZW-STV3S (multiple filter head options)

分体设计不是简单的"拆分"，而是以模块化思维重新构建检测流程。ZW-LotusVF3S与ZW-STV3S用316L的品质、分体的灵活和一次性耗材的便捷，为微生物限度检测提供了"因需而变"的解决方案。

Split design is not merely "separation" — it is the reconstruction of testing workflows through modular thinking. The ZW-LotusVF3S and ZW-STV3S deliver 316L quality, split-design flexibility, and disposable consumable convenience, providing a "testing on demand" solution for microbial limit filtration.

选型对比| Comparison

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上海渤程 | Shanghai Bio-Chem Biotech