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Vertical group shot of 10 mixed specification borosilicate glass lab thermometers, red liquid column & silver mercury bulb two types, etched Celsius temperature scales, top hanging loop design, mirror reflection on pure white background

Vertical macro close-up comparison of thermometer sensing bulbs: left two red liquid red round bulbs, right two silver mercury metal bulbs, transparent glass tube bottom detail, plain white background

Diagonal close-up of three glass laboratory thermometers, two circular zoom insets: clear etched Celsius scale, full smooth red liquid column, text labels "The scale is clear, The liquid column is full", white background feature marketing graphic

Diagonal overlapping macro close-up of multiple red liquid glass lab thermometers, clear continuous red liquid column, permanent etched brown Celsius scale markings, transparent borosilicate glass tube surface, white background

Vertical macro close-up of glass thermometer top hanging ring, seamless one-piece blown glass loop structure, partial etched Celsius scale on transparent tube, isolated white background

Feature graphic of glass lab thermometer top hanging hole design, two diamond zoom insets: hanging loop storage structure, fine precision Celsius scale, text "Hanging hole design Space-saving and easy to place, Automatic temperature control without shaking", white background

Features & Details

🌡️ RED ORGANIC FLUID

Filled with a highly visible red organic liquid natively. Therefore, it ensures distinct and easy-to-read thermal measurements without toxic mercury hazards.

📏 STANDARD 300MM

Designed with a universal 300mm extended glass rod. Consequently, it reaches deep into large flasks safely and is packaged conveniently with 20 pieces per box.

⚙️ MULTIPLE RANGES

Available in diverse standard measurement ranges from -50°C up to 200°C. Specifically, it satisfies strict testing requirements across different chemical settings.

🏭 BROAD APPLICATION

Built for versatile daily operations seamlessly. Ultimately, it provides accurate direct temperature readings for chemical labs, agriculture, and reaction boilers.

About this item

Product specification

Parameter

Specification Details

Material & Build Specifications

Product Name

Red Liquid Glass Thermometer

Sensing Liquid

Red Organic Liquid (100% Mercury-Free)

Thermometer Length

Standard 300mm (30 cm / 11.81 Inches)

Ranges & Packaging Information

Standard Temp Ranges

Above Zero: 0–50°C, 0–100°C, 0–150°C, 0–200°C
Below Zero: -50°C to 50°C, -30°C to 100°C

Packaging Quantity

Bulk Pack: 20 Pieces per box

Typical Applications

Chemical labs, reaction boilers, agriculture, and aquaculture

Precise Thermal Tracking with the Red Liquid Glass Thermometer

Equip your scientific facility with our professional-grade red liquid glass thermometer. We designed this specialized temperature monitoring tool to deliver fast, highly visible, and accurate readings during routine laboratory procedures. It protects researchers from toxic heavy metal exposure by utilizing a safe, organic red sensing fluid. Whether you are conducting academic chemical synthesis or industrial aquaculture monitoring, this red liquid glass thermometer delivers reliable thermal data instantly.

Furthermore, professional laboratories must adhere to rigorous quality and thermal safety standards. Experts explicitly follow the global ASTM specifications for liquid-in-glass thermometers to ensure highly accurate temperature containment during reactive chemistry. Thus, we engineered this 300mm long thermometer with premium thermal glass natively. Ultimately, it guarantees your analytical projects meet demanding scientific quality requirements flawlessly. Explore our full range of Environmental Testers to ensure comprehensive temperature control for your daily operations.

1Highly Visible Red Organic Liquid

We engineered this red liquid glass thermometer for diverse and demanding thermal applications. Old-fashioned mercury instruments pose severe toxic hazards if accidentally broken. Fortunately, our product utilizes a safe, highly visible red organic fluid natively. It provides exceptional contrast against the white glass background, ensuring your temperature readings remain clear and effortless to record from a safe distance.

2Multiple Measurement Range Options

Different chemical experiments require completely different thermal boundaries. Thus, we equipped this bulk pack series with a wide variety of temperature range configurations. You can select specific scales ranging from ultra-low -50°C freezing conditions up to intense 200°C heating environments, allowing for ultimate testing versatility in your specific industrial setup.

3Standard 300mm Extended Dimensions

Flimsy, short temperature probes fall easily into deep reaction flasks, posing severe retrieval risks. Consequently, every Xin Tester thermometer features a reinforced, 300mm long glass rod design. It provides exceptional physical reach and maintains a safe physical distance between the researcher’s hands and the hot chemical solutions, maximizing safety in high-intensity labs.

Core Capabilities of the Lab Thermometer

🧪 Safe Alternative

Replaces dangerous and heavily regulated toxic mercury with a 100% safe organic red sensing fluid.

📦 Bulk Packaging

Supplied in secure, vibration-resistant boxes of 20 pieces, providing an economical supply for large classes.

👁️ Clear Scale Lines

Features permanently baked-on graduation marks that resist fading even after prolonged exposure to chemical vapors.

🏭 Broad Application

Perfect for a vast array of industries, including agriculture, oil baths, brewing, and school science experiments.

Investing in a reliable red liquid glass thermometer is absolutely essential for maintaining strict thermal protocols. Our 300mm glass rod thermometers combine immense ease of use with laboratory-grade accuracy, making them the perfect solution for scientific researchers evaluating complex temperature-sensitive formulas.

Use Cases

Environmental Monitoring Home Brewing & Distilling Pocket Size Portable School Science Labs

FAQs

Q1: Is this thermometer mercury-free and safe for schools?

A1: Yes, absolutely. It uses a highly visible, safe red organic sensing liquid instead of toxic mercury. This makes it perfectly safe for use in educational science laboratories, home brewing, and general industrial environments.

Q2: Can I use this thermometer for boiling water or hot oil?

A2: Yes. Depending on the specific range model you select, the 0-100°C and 0-200°C variations are perfectly suited for monitoring boiling liquids, chemical reactions, and hot oil baths in laboratory settings.

Q3: Why is the thermometer exactly 300mm long?

A3: The extended 300mm (30cm) length is the laboratory standard. It allows the thermometer to reach deep into large Erlenmeyer flasks, deep vats, and reaction boilers while keeping the user’s hands safely away from the heat source.

Q4: Will the red liquid fade or the scale lines rub off over time?

A4: No. The red organic liquid is specifically formulated to retain its high-contrast color permanently. Furthermore, the black graduation marks are baked directly onto the glass surface to resist fading from chemical vapor exposure.

Red Liquid Glass Thermometer, 300mm Industrial Lab Thermometer (20 Pcs)

Price range: $18.99 through $26.99

Extra 5% Off with code: welcome5

Color

Clear

6–12 Month Warranty

Repair & Refund support available for most products.

Free Worldwide Shipping

Ships within 3 business days.

Taxes & Duties

Buyer responsible for local import fees.

24/7 After-Sales Support

Technical assistance & video guidance within 24h.