COLO.Science · Technical Specification
SIRET Series
Analytical Balance · 0.1mg Readability · Internal/External Calibration
The SIRET® Series analytical balances deliver high‑precision performance for demanding laboratory measurements. Equipped with electromagnetic force compensation load cell, internal or external calibration options, anti‑vibration filter, and optional data collection software, these balances provide sharp and stable readings. The large LCD backlight ensures high visibility, while the three‑side opening door and all‑side windshield provide easy access and protection.
0.1mg readability Internal/External calibration EMFC load cell Anti‑vibration filter RS232 & USB LCD backlight Under-pan weighing Hydrostatic weighing
Document type: Technical Specification Sheet
Product line: SIRET100 · SIRET120 · SIRET160 · SIRET200 · SIRET210 · SIRET220 · SIRET300 · SIRET310 · SIRET320
Format: Print Edition · A4 Landscape · V1.0
SIRET series analytical balance
SIRET Series · High‑precision analytical balance with internal calibration
SIRET balance LCD display
Large LCD display with backlight · RS232 & USB connectivity
Models SIRET100–320 (internal) · SIRET100E–320E (external)
Address (HQ) Polje ob Sotli 4
SI-3255, Slovenia
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COLO.Science logo SIRET · Analytical Balance
Document ID: COL-TEC-SIRET-EN-V1
Version: Print Edition · V1.0
Technical datasheet · Non‑binding · Controlled document
SIRET100–320 / SIRET100E–320E · technical specificationanalytical balances with 0.1mg readability
0.1mg readability ±0.2mg repeatability ≤3 sec stabilization Internal/External calibration EMFC load cell Anti‑vibration filter RS232 & USB — Ideal for analytical weighing, QC, research & formulation
📊 Comparative specifications · SIRET Series
Parameter Internal Calibration Models External Calibration Models
Model → SIRET100SIRET120SIRET160SIRET200SIRET210SIRET220SIRET300SIRET310SIRET320 SIRET100ESIRET120ESIRET160ESIRET200ESIRET210ESIRET220ESIRET300ESIRET310ESIRET320E
Calibration Internal (automatic/time/temperature) External (with external weight)
Maximum capacity (g) 100120160200210220300310320 100120160200210220300310320
Readability (g) 0.0001 g (0.1 mg)
Accuracy class I
Minimum weighing (g) 0.0004 g (0.4 mg)
Repeatability (mg) 0.2 mg
Linearity (mg) ±0.0003 g (0.3 mg)
Stabilization time ≤3 sec
Operating temperature 10°C – 30°C
Operating humidity (RH) 20% – 85%
Measuring sensor type Electromagnetic force compensation (EMFC)
Weighing modes g, oz, ct, %, count mode, calibration function
Communication ports RS232, USB
Power supply 110‑230V, 50‑60Hz (power net adapter)
Display High Resolution LCD with backlight
Standby mode Yes
Pan size Ø80 mm (stainless steel)
Under-pan weighing Optional
Weighing chamber (L×W×H) 162 mm × 172 mm × 203 mm
Overall dimensions (L×W×H) 215 mm × 345 mm × 345 mm
Net weight / Gross weight 6.3 kg / 10 kg
* All models feature electromagnetic force compensation load cell, anti‑vibration filter, large LCD backlight, RS232 and USB ports. Internal calibration models include automatic calibration based on time and temperature changes. External calibration models require external weight for calibration.
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⚙️ Technology & key features
Weighing principle
Electromagnetic force compensation (EMFC): Provides exceptional accuracy and stability for 0.1mg precision weighing.
Internal calibration (models without "E"): Automatic calibration based on time and temperature changes ensures consistent accuracy.
External calibration (models with "E"): Calibration using external certified weight for flexibility.
Anti‑vibration filter: Reduces the effect of vibrations on the measurement, ensuring stable readings even in challenging laboratory environments.
User interface & connectivity
Large LCD with backlight: High resolution display ensures clear visibility in all lighting conditions.
RS232 & USB communication ports: Enable seamless data transfer to PCs, printers, or laboratory information systems.
Standby mode: Energy-saving mode when balance is not in use.
Optional software for data collection: Provides ability to collect data and control measurement process.
Built‑in application modes
Check weighing: Set high/low limits for quick pass/fail determination.
Parts counting: Automatically count small, uniform parts with reference weight calculation.
Percentage weighing: Display weight as a percentage of a reference weight, ideal for formulation and batch control.
Hydrostatic weighing (optional software): For density determination of solids and liquids.
Construction & durability
Stainless steel pan: Ø80mm, easy to clean and resistant to corrosion.
Three‑side opening door (both sides and top): Easy access to weighing chamber.
All‑side windshield: Protects from air currents and dust.
Impact resistant construction: Robust housing and plastic keyboard cover for durability.
Levelling feet and built‑in bubble level: For precise horizontal positioning.
Under‑pan weighing hook (optional): For density measurements and special applications.
🧪 Typical applications
  • Analytical chemistry & sample preparation
  • Pharmaceutical formulation & QC
  • Food & beverage ingredient measurement
  • Environmental analysis (filter weighing, solids)
  • Cosmetics & personal care product development
  • Academic research & teaching laboratories
  • Forensic & toxicology sample weighing
  • Industrial QC & incoming goods inspection
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🖼️ Product visuals & dimensions
SIRET analytical balance with windshield
SIRET Series · Analytical balance with three‑side opening door
SIRET large LCD display and keypad
Large LCD backlight display · Intuitive keypad for application modes
Dimensions & installation
ParameterSpecification
Overall dimensions (L×W×H)215 mm × 345 mm × 345 mm
Weighing chamber (L×W×H)162 mm × 172 mm × 203 mm
Weighing pan sizeStainless steel Ø80 mm
Net weight / Gross weight6.3 kg / 10 kg
Power supply110‑230V, 50‑60Hz
Under‑pan weighingOptional (hook included)
Technical notes & performance
Stabilization time: ≤3 seconds for fast and efficient weighing.
Repeatability: 0.2 mg ensures reliable results across all models.
Minimum weighing: 0.4 mg, compliant with USP requirements for analytical balance operation.
Calibration: Internal (automatic) or external, depending on model.
Max capacity100–320 g
Readability0.1 mg (0.0001 g)
Repeatability0.2 mg
Stabilization≤3 sec
* Performance specifications are valid under controlled laboratory conditions (10–30°C, 20–85% RH). For optimal results, allow the balance to warm up and perform calibration before use.
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📦 Ordering information & standard delivery scope
ModelOrder codeMaximum capacityCalibration
SIRET100SIRET-100100gInternal
SIRET200SIRET-200200gInternal
SIRET300SIRET-300300gInternal
SIRET320SIRET-320320gInternal
SIRET100ESIRET-100E100gExternal
SIRET200ESIRET-200E200gExternal
SIRET300ESIRET-300E300gExternal
SIRET320ESIRET-320E320gExternal
Standard accessories (included)
  • Universal power adapter (110‑230V, 50‑60Hz)
  • Dust cover for protection when not in use
  • Instruction manual with quick‑start guide
  • Windshield (all sides, three‑side opening door)
  • Stainless steel weighing pan Ø80mm
  • Levelling feet and built‑in bubble level
Optional accessories & upgrades
  • Thermal printer for result documentation
  • WiFi control module
  • Hydrostatic weighing set
  • Control weight (certified calibration weight)
  • ISO/IEC 17025 calibration certificate
  • Under‑pan weighing hook
  • Data collection software
Manufacturer & support
COLO LabExperts
Polje ob Sotli 4, SI-3255 Buce, Slovenia
Selection advice: Choose internal calibration models (without "E") for automated calibration based on time/temperature, or external calibration models (with "E") if you prefer using external certified weights. Select capacity based on your maximum sample weight (100g to 320g). All models offer identical 0.1mg readability and 0.2mg repeatability.
Quick contact
🌐 colo.si
🔬 Knowledge: COLO.Science
COLO.Science · analytical balance support

Request a quote or application consultation

Tell us about your weighing task: required capacity, calibration type (internal or external), sample type, environmental conditions, and any connectivity needs (PC, printer, software). Our technical sales team will respond with a tailored configuration and pricing.

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Manufacturer & binding specification notice:
The information contained in this document reflects typical product parameters based on the SIRET® series. COLO LabExperts reserves the right to improve design and specifications without prior notice. For tender, procurement, and quality assurance, the only valid technical specification is the official COLO quotation accompanied by an engineering‑approved datasheet.
SIRET balances are designed for laboratory use. Always follow the instruction manual for proper installation, calibration, and operation. For custom configurations or OEM requests, please contact our engineering team directly.
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