Traceable® 4730TR Ultra™ Refrigerator/Freezer Thermometer with Glass Bottle Probe

Traceable® 4730TR Ultra™ Refrigerator/Freezer Thermometer with Glass Bottle Probe

The Traceable® Ultra™ thermometer provides high‑accuracy monitoring for refrigerators, freezers, incubators, water baths, and other critical temperature‑controlled environments. Triple‑display functionality allows simultaneous viewing of minimum, maximum, and current temperatures. The included glass bottle probe is filled with nontoxic glycol (GRAS), providing a temperature‑buffered reading that mimics actual sample conditions. Each unit includes an individually numbered NIST‑traceable certificate from an A2LA‑accredited calibration laboratory, ensuring compliance with ISO/IEC 17025 calibration standards.

Key Features

• Ultra™ accuracy ±0.5°C between –30 to 50°C; otherwise ±1°C
• Triple display shows MIN/MAX and current temperature simultaneously
• 10‑ft microcable allows refrigerator/freezer doors to close on it
• °C/°F selectable
• Includes one glass bottle probe
• Bottle filled with nontoxic glycol (GRAS) to mimic actual solution temperature
• Measures –50 to 70°C (–58 to 158°F)
• Includes NIST‑traceable certificate from A2LA‑accredited calibration laboratory
• 1‑year warranty

More About This Item

Accurately monitor temperatures in refrigerators, freezers, water baths, and incubators. The thermometer displays minimum, maximum, and current readings simultaneously. It measures –50 to 70°C (–58 to 158°F) with 0.1° resolution and Ultra™ accuracy of ±0.5°C between –30 to 50°C.

Built‑in audible and visual alarms activate when temperature rises above or falls below the programmed set points. Alarms are adjustable in 0.1° increments. Both audible and visual alarms continue even if the unit returns to non‑alarm conditions until the alarm is acknowledged.

The 10‑ft (3‑m) microcable allows refrigerator or freezer doors to close on it without damage. Mount the unit using the included hook‑and‑loop strips, magnetic strips, wall‑mount slots, or the flip‑open stand.

Technical Specifications

• Measurement Type: Digital indicator
• Probe Channels: 1
• Temperature Range: –58 to 158°F (–50 to 70°C)
• Accuracy: ±0.5°C (–30 to 50°C); otherwise ±1°C
• Resolution: 0.1°
• Alarm: Yes
• Min/Max Function: Yes
• Low Battery Indicator: Yes
• Display: LCD
• Dimensions: 4‑1/4″ H × 2‑3/4″ W × 3/4″ D
• Probe Length: 2‑1/2″
• Probe Diameter: 1″
• Cable Length: 120″ (10 ft)
• Probe Type: Glass bottle, glycol‑filled
• Battery: 2 × AAA (included)
• Description: Ultra™ Refrigerator/Freezer Thermometer; 1 Glass Bottle Probe
• Warranty: 1 year

Included Accessories

• Traceable® Certificate
• Glass bottle probe with 10‑ft cable
• Flip‑open stand
• Hook‑and‑loop strips
• Magnetic strips
• Wall mount
• Batteries

The Traceable® Ultra™ thermometer is ideal for refrigerators, freezers, incubators, and any environment requiring high‑accuracy, buffered temperature monitoring. It supports regulated workflows in [laboratory QA/QC](ca://s?q=Explain_lab_QA_QC_temperature_monitoring) and controlled‑storage applications.

Guaranteed to have at least one year of calibration remaining on certificate.