POP-UP TEMPERATURE INDICATORS

YELLOW 138S Disposable Pop-Up Temperature Indicator

YELLOW 138S Disposable Pop-Up Temperature Indicator

YELLOW 138S is a small-size disposable pop-up temperature indicator designed for medium-temperature cooking applications where reliable internal temperature confirmation is required. With a 138°F activation temperature, this model provides a simple visual indication when food reaches the target cooking point.

YELLOW 138S Small Disposable Pop-Up Temperature Indicator For Medium Roast Applications

Manufactured by LIOU Manufacturing – PopNReady Brand, YELLOW 138S is produced for global B2B customers requiring consistent quality, bulk supply capability, and flexible OEM customization. Since 2006, our factory has focused exclusively on disposable pop-up timers and temperature indicator solutions.

Product Specifications

ModelYELLOW 138S
SizeSmall (S) - 1-1/8" in length (28.6 mm)
Button Head ColorYellow
Activation Temperature138°F (59°C)
Activation Accuracy±2°F (±1°C)
Housing MaterialFood-grade PA66 Nylon
Core MaterialFood-grade PA66 Nylon
Sensing MaterialFood-grade wax sensing medium
Spring TypeMetal spring
BPA StatusBPA-Free
Food SafetyNo heavy metals contained

Reliable Temperature Indication For Medium Roast Applications

YELLOW 138S is designed for customers who require a higher activation temperature than rare roast applications. The 138°F setting provides a practical solution for medium roast beef products and professional cooking environments where repeatable temperature indication is important.

The compact Small size allows easy integration into smaller cuts, retail food products, and applications where a shorter insertion length is preferred.

Product Advantages

  • 138°F medium roast temperature indication
  • Compact Small size design
  • Clear visual pop-up signal
  • Single-use food temperature indicator
  • Stable activation performance
  • Suitable for commercial and industrial cooking environments

Recommended Applications

  • Medium roast beef products
  • Beef processing facilities
  • Commercial roasting operations
  • Food service suppliers
  • Prepared food manufacturers
  • Central kitchen production
  • Premium restaurant supply chains
  • Meat packaging applications

Factory Direct OEM Customization

PopNReady provides direct factory OEM manufacturing services for companies requiring customized disposable temperature indicator solutions.

Available customization options include:

  • Custom Activation Temperature
  • Custom PANTONE Color Matching
  • Custom Logo Injection Molding On Button Head
  • Custom Retail Blister Card Packaging
  • Custom Clear Resealable Bag Packaging
  • Private Label Product Solutions

Material Safety & Manufacturing Quality

YELLOW 138S is manufactured using food-grade materials selected for professional food applications. The housing and internal structure are produced with food-grade PA66 Nylon, combined with a food-grade wax sensing element.

  • Food-grade PA66 Nylon components
  • BPA-Free construction
  • Food-grade sensing wax
  • Metal spring mechanism
  • No heavy metal materials
  • Consistent factory production control

Bulk Supply For International Buyers

As a specialized disposable temperature indicator manufacturer, LIOU Manufacturing supplies YELLOW 138S for bulk OEM projects worldwide. Our customers include food processors, distributors, commercial kitchens, and private label brands.

Our manufacturing focus is: One Product. Professional. Focused. 100% for Export Only.

Frequently Asked Questions

1. What is YELLOW 138S?

YELLOW 138S is a disposable pop-up temperature indicator with a 138°F activation temperature designed for medium roast and professional cooking applications.

2. What temperature does YELLOW 138S activate at?

The activation temperature is 138°F (59°C).

3. What size is this model?

YELLOW 138S is the Small version with a length of 1-1/8 inches (28.6 mm).

4. Is this product reusable?

No. It is a single-use disposable temperature indicator.

5. Can you customize the activation temperature?

Yes. Custom activation temperature solutions are available for OEM customers.

6. Can the button color be customized?

Yes. Custom PANTONE color matching is available according to customer requirements.

7. Do you supply bulk orders?

Yes. Bulk OEM production is one of our main manufacturing services.

8. Who purchases YELLOW 138S?

Typical customers include meat processors, food manufacturers, distributors, and commercial food service companies.

9. What certifications are available?

FDA, EU food contact compliance, and BRC related certification support are available according to customer requirements.

DISCLAIMER:

"Pop-Up Temperature Indicator" and "Pop-Up Timer" are generic industry terms used to describe disposable temperature indication devices in the food processing industry. LIOU Manufacturing – PopNReady Brand is an independent direct-source manufacturer and is not affiliated with VOLK or any other third-party brand. Any reference to other brands is provided only for identification, comparison, and compatibility purposes. YELLOW 138S is independently manufactured by PopNReady for professional food processing, commercial cooking, and OEM supply applications.