YELLOW 138L Disposable Pop-Up Indicator

PopNReady YELLOW 138L is a large-size disposable pop-up indicator designed for medium rare beef and larger meat products requiring reliable temperature indication. Manufactured by LIOU Manufacturing & PopNReady since 2006, this food-grade temperature indicator provides a clear visual signal when the internal temperature reaches 138°F (59°C).

With its extended insertion length, YELLOW 138L is suitable for larger meat cuts and commercial food processing applications where deeper temperature sensing is required. It provides a simple, hygienic and efficient solution for food manufacturers, meat processors, restaurant groups and OEM customers worldwide.

As a direct-source disposable pop-up indicator manufacturer, LIOU Manufacturing supplies YELLOW 138L through bulk OEM production and customized solutions for global B2B customers.

YELLOW 138L Product Specifications

Product Features

YELLOW 138L combines a longer body design with accurate thermal activation performance, making it ideal for larger meat products where standard-size indicators may not provide sufficient insertion depth.

• Large (L) size design for larger food products
• 138°F medium rare activation temperature
• ±2°F temperature activation accuracy
• Food-grade PA66 nylon construction
• BPA-free thermal sensing system
• Disposable single-use design
• Consistent dimensions for industrial applications

Applications

YELLOW 138L is suitable for medium rare meat applications requiring deeper temperature indication and consistent cooking results.

• Large roast beef products
• Premium beef cuts
• Meat processing facilities
• Commercial roasting operations
• Foodservice production
• Central kitchens
• Ready meal manufacturers
• OEM food processing companies

OEM Customization Capability

LIOU Manufacturing provides flexible OEM manufacturing solutions for customers requiring customized disposable pop-up indicators.

YELLOW 138L customization options include:

• Custom activation temperature
• Custom button head colors
• Logo injection on button head
• Private label solutions
• Bulk export packaging
• Blister card packaging
• Display box packaging
• Custom retail packaging

Bulk Supply For Global B2B Buyers

YELLOW 138L is mainly supplied as a bulk OEM product for international customers requiring stable quality and long-term production support.

Since 2006, LIOU Manufacturing has focused on one product category only — disposable pop-up indicators. This focused manufacturing experience allows us to provide professional support, consistent specifications and reliable supply.

• Direct factory source
• No middlemen
• OEM production capability
• Global export experience
• Long-term supply partnership

Material Safety & Quality

YELLOW 138L is produced using food-grade materials designed for food temperature indication applications.

• Food-grade PA66 nylon housing
• Food-grade PA66 internal core
• Food-derived thermal wax sensing material
• BPA-free construction
• No heavy metal materials
• FDA support
• EU food contact compliance support
• BRC quality requirement support

Frequently Asked Questions

What is YELLOW 138L?

YELLOW 138L is a large-size disposable pop-up indicator designed for medium rare beef and larger meat products.

What temperature does YELLOW 138L activate?

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

What is the difference between YELLOW 138S and 138L?

The difference is the product length. The 138L model provides a longer body design for larger products requiring deeper insertion.

Is YELLOW 138L reusable?

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

Can activation temperature be customized?

Yes. LIOU Manufacturing supports customized activation temperatures for OEM customers.

Can you supply bulk quantities?

Yes. Bulk OEM supply is our main business model for international B2B customers.

Can you provide private label packaging?

Yes. We provide customized packaging solutions including blister cards and display boxes.

Which industries use YELLOW 138L?

Typical users include meat processors, food manufacturers, restaurant groups, distributors and OEM food companies.

Is YELLOW 138L suitable for industrial production?

Yes. Stable dimensions and consistent specifications make it suitable for industrial food processing applications.