Which molecular sieve size is best for water absorption? Are any of the molecular sieves able to be reactivated in a typical house oven?

13X molecular sieve is best for liquid water absorption. All types of molecular sieve have to be baked at 550℃/1022℉ to be fully reactivated. If you use a house oven, the molecular sieve can be reactivated at some level, but not fully reactivated.

Are these 4A beads pre-activated or do I have to bake them before use?

They come activated! They work great!

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💧 Stay dry, stay sharp — moisture’s worst enemy is here!

OVEN RECHARGEABLE POWER - Simply bake at 550°C to instantly renew desiccant efficiency and save costs.
RAPID MOISTURE LOCKDOWN - Absorbs over 17% of its weight in water vapor at 25°C for unbeatable dryness.
VERSATILE COLD CLIMATE USE - Effective moisture control even at freezing temps down to -20°C for year-round protection.
ERGONOMIC DUAL HANDLE DESIGN - Easy-pour container with multi-grip handles for precise, mess-free application every time.
BULK CAPACITY FOR PROFESSIONALS - Generous 7.5 lbs volume fits multiple storage needs—perfect for labs, collectors, and gear pros.

Wisesorb’s 7.5 lbs 4A Molecular Sieve desiccant beads deliver premium, fast-acting moisture absorption with over 17% water vapor capacity at room temperature. Rechargeable by high-heat baking at 550°C, these durable beads maintain peak performance even in freezing conditions down to -20°C. Packaged in an ergonomic dual-handle container, they offer bulk volume ideal for protecting sensitive equipment, collectibles, and professional gear from humidity damage.

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Brand	Wisesorb
Manufacturer	Wisesorbent Technology LLC
Model number	1
Colour	4A
Number of Memory Sticks	1
Item Weight	3 kg 640 g
Product Dimensions	23 x 9.5 x 29.5 cm; 3.64 kg
Item model number	1
Item Height	29.5 Centimeters
Item Width	9.5 Centimeters
Are batteries included?	No

Wisesorb 7.5LBS Premium Quality Reusable 4A Molecular Sieve Desiccant Beads-Rechargeable

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