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Comet Durranda (Wuxi) Measurement Technology Co., Ltd.

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BrandDerenda
OriginJiangsu, China
ModelAWS-1RE
Measurement MethodFilter Gravimetry
Measurable ParametersPM₂.₅, PM₁₀, TSP, Low-Concentration Sampling Heads, No. 3 Impingers
Temperature Control Range15–30 °C (±0.5 °C)
Relative Humidity Control Range40–60 %RH (±5 %RH)
Cleanroom ClassISO 14644-1 Class 6
Max Throughput225 × 47 mm filters / 105 × 90 mm filters / 45 × No. 3 impingers per batch
Weighing Time per Filter≤20 s
Electrostatic Dissipation Efficiency≥92%
Balance Readability0.001 mg (optional 0.0001 mg)
Repeatability0.003 mg
Linearity Error0.02 mg
Vibration IsolationFour-Tier Passive Damping System
Filter IdentificationRFID + QR/Barcode
Data ComplianceASTM D1357, ISO 12103-1, US EPA QA/QC Document 2.12, HJ 656–2013, EN 12341:2014, EN 14907:2005
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BrandDerenda
OriginJiangsu, China
ModelMWS-2
Measurement MethodFilter Gravimetric Method
Measured ParametersTSP / PM₁₀ / PM₂.₅ / PM₁
ComplianceHJ 836–2017, HJ 656–2013, EN 12341:2014, US EPA 40 CFR Part 86/1065, EPA QA Document No. 2.12 (Ambient Air Quality)
Sample Capacity (per batch)80 × 47 mm filters (160 with optional storage tower), 30 × 90 mm filters (60 with tower), 24 × low-concentration samplers (48 with tower), 24 × No.3 impinger tubes (48 with tower)
Temperature Control Range15–30 °C (±0.1 °C stability)
Humidity Control Range40–55 %RH (±2 %RH accuracy)
Dew Point Stability±0.1 °C
Chamber CleanlinessISO 14644 Class 6
Weighing Instrument OptionsAnalytical balance with readability down to 0.01 mg (10 µg) or 0.001 mg (1 µg), integrated anti-vibration platform with decoupling architecture
Electrostatic NeutralizationIonizing air blower (radiation-free, 100% neutralization efficiency per cycle)
IdentificationQR code, barcode, and optional RFID encoding (chip embedded in sample holder ring)
User InterfaceErgonomic front access ports, large transparent viewing panel, built-in control software with audit-trail-capable database
Power220 V ±10%, 50 Hz, 1000 W
Dimensions1180 mm (L) × 800 mm (W) × 2000 mm (H)
Weight400 kg (including climate module)
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BrandDerenda
ModelMDM-2
Measurement PrincipleLaser Light Scattering (Nephelometry)
Measured ParametersPM₁, PM₂.₅, PM₁₀
PM₂.₅ Range0–2500 µg/m³
PM₁₀ Range0–5000 µg/m³ (calculated from PM₂.₅)
Minimum Detection Limit2 µg/m³
Resolution0.1 µg/m³
Sampling Flow Rate≥0.15 L/min (typical 0.3 L/min)
Measurement Interval2 s
Response Time≤5 s
Accuracy (24-hr avg)±15%
Power SupplyRechargeable Li-ion Battery
Battery LifeUp to 8 h
Dimensions220 mm × 90 mm × 85 mm
Weight~600 g
Data Storage & TransmissionmicroSD card, 3G/4G module
Integrated SensorsBarometric Pressure, Altitude
DisplayColor TFT Touchscreen
Expected Photometer Lifetime5 years
ComplianceDesigned for field-deployable ambient air monitoring per ISO 12103-1 reference aerosol compatibility and aligned with EPA EQPM-0709-192 performance expectations for portable PM monitors
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BrandDerenda
OriginGermany
ModelAPM-2E
Measurement PrincipleLaser Light Scattering
Measured ParametersPM₁₀ / PM₂.₅
Measurement Range0–2500 µg/m³
Minimum Detection Limit1 µg/m³
Measurement Interval5 s
Flow Stability±5%
Resolution0.1 µg/m³
Operating Temperature−30 °C to +50 °C
Operating Humidity0–100 %RH (with automatic heating dehumidification)
Acoustic Noise<35 dB(A) (per DIN 2058, at 8 m)
Power SupplyAC 220 V ±10 %, 50/60 Hz
Enclosure RatingIP65
Dimensions300 × 250 × 480 mm
Weight15 kg
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BrandDerenda
OriginJiangsu, China
Manufacturer TypeAuthorized Distributor
Origin CategoryDomestic
ModelMWS-3
PriceUSD 1 (FOB)
Measured ParametersTSP / PM₁₀ / PM₂.₅
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