YELLOW 138L DISPOSABLE POP-UP TIMER

YELLOW 138L DISPOSABLE POP-UP TIMER
PopNReady YELLOW 138L is a large-size disposable pop-up timer manufactured for professional food processing, commercial kitchens, and industrial cooking applications requiring deeper temperature monitoring.
Designed and produced by PopNReady, a direct disposable pop-up timer manufacturer since 2006, this model provides reliable internal temperature indication for large beef cuts, thick fish fillets, and other larger food products where consistent core temperature control is essential.
When the internal temperature reaches 138°F (59°C), the button automatically rises to provide a clear visual signal that the target cooking temperature has been achieved. This simple one-time-use solution helps reduce manual checking and supports consistent production results.

PRODUCT OVERVIEW
YELLOW 138L features an extended 1-7/8 inch length, making it suitable for thicker food products where deeper insertion is required for accurate temperature indication.
Compared with small-size models, the large L version is specially developed for professional applications such as large roast beef cuts, prime rib, thick steaks and fish fillets. It is widely used by meat processors, food manufacturers, restaurant groups and industrial foodservice companies.
As a factory-direct manufacturer, PopNReady supplies YELLOW 138L mainly through bulk OEM production with flexible customization options for international B2B customers.
TECHNICAL SPECIFICATIONS
| Model Number | YELLOW 138L |
|---|---|
| Size | Large (L) - 1-7/8 inches (47.6 mm) in length |
| Button Head Color | Yellow |
| Activation Temperature | 138°F (59°C) |
| Activation Accuracy | ±2°F (±1°C) |
| Materials | Food-grade PA66 Nylon housing and core, metal spring construction, plant-extracted food-grade temperature-sensitive wax |
| BPA Status | BPA-Free |
| Heavy Metals | No heavy metals |
| Certifications | FDA Food Contact Compliance, EU Food Contact Materials Compliance, BRC Food Safety Standard |
APPLICATIONS
YELLOW 138L is designed for larger food products requiring deeper temperature measurement:
- Large beef cuts
- Prime rib roasts
- Large steaks
- Thick fish fillets
- Salmon, cod and similar fish products
- Industrial beef processing
- Commercial steakhouse chains
- Central kitchens
- Premium frozen meal production
- Professional foodservice operations
WHY CHOOSE YELLOW 138L?
Large food products often require accurate core temperature indication because surface temperature does not represent the internal cooking condition. YELLOW 138L provides a simple visual solution that helps operators identify when the desired temperature has been reached.
Its extended design improves penetration depth while maintaining the same professional manufacturing standards used across PopNReady disposable pop-up timer products.
- Designed for large food applications
- Clear visual pop-up indication
- Suitable for industrial production environments
- Consistent temperature activation
- Disposable design helps reduce cross-contamination risks
- Reliable bulk OEM manufacturing
OEM CUSTOMIZATION OPTIONS
PopNReady supports flexible OEM manufacturing according to customer production requirements.
- Custom activation temperatures
- Custom button head colors
- Logo injection molding on button head
- Private label manufacturing
- Custom retail packaging
- Bulk export carton packaging
- Blister card packaging
- Self-sealing bag packaging
- Custom display boxes
PACKAGING OPTIONS
- Bulk export cartons
- Transparent self-sealing bags
- Blister card with paper backing
- Custom branded display boxes
MANUFACTURING ADVANTAGE
PopNReady is not a trading company. We are a direct factory specializing exclusively in disposable pop-up timers.
Since 2006, we have focused on one product category, allowing us to provide stable quality, professional technical support and flexible OEM solutions for customers worldwide.
- Direct manufacturer since 2006
- 100% export business
- Professional disposable pop-up timer production
- Food-grade material control
- Large-volume production capability
- Global B2B supply experience
FREQUENTLY ASKED QUESTIONS
1. What is the activation temperature of YELLOW 138L?
YELLOW 138L activates at 138°F (59°C).
2. What is the size of this model?
It is Large size (L) with a 1-7/8 inch length.
3. What is the difference between 138S and 138L?
The main difference is size. YELLOW 138L has a longer body designed for larger food products requiring deeper insertion.
4. What foods are suitable for this model?
It is suitable for large beef cuts, roast beef, prime rib, thick fish fillets and similar applications.
5. Can you customize the activation temperature?
Yes. Custom activation temperatures are available for OEM projects.
6. Can we add our company logo?
Yes. Logo injection molding on the button head is available.
7. Are the materials food safe?
Yes. The product uses food-grade PA66 Nylon and food-derived temperature-sensitive wax materials.
8. Is this model available for bulk purchase?
Yes. Bulk OEM production is our primary supply model.
9. What certifications are available?
The product supports FDA, EU food contact compliance and BRC requirements.
10. Why buy directly from PopNReady?
Because PopNReady is the original manufacturer, providing direct factory pricing, professional OEM support and stable production capability.
DISCLAIMER
"Pop-Up Timer" is a generic industry term describing disposable cooking temperature indicators. PopNReady is an independent China-based manufacturer specializing in disposable pop-up timers and is not affiliated with, authorized by, or endorsed by any third-party brand. Any reference to product categories, applications, or market terminology is provided only for identification and technical communication purposes. YELLOW 138L is independently manufactured by PopNReady for professional food processing, commercial cooking and B2B OEM applications.
