trigger sprayer

The most critical step is matching the sprayer to your bottle's neck finish. Common industry standards include 28/400, 28/410, and 28/415. The first number refers to the diameter (mm), and the second refers to the thread style. Always request a technical drawing from the supplier to ensure the dip tube length is customized to reach the bottom of your specific bottle to avoid product waste.

Most trigger sprayers are made of Polypropylene (PP), but the internal components are what matter most. For corrosive chemicals or oils, you must specify Viton seals or NBR gaskets instead of standard rubber. If your product is water-based, a 304 or 316 stainless steel spring is necessary to prevent oxidation and clogging. For metal-free paths, consider all-plastic sprayers which are also more recyclable.

Evaluate the nozzle settings: Stream, Spray, and Off are standard, but high-end models offer a Foaming function for cleaning agents. For safety, especially in household products, ensure the sprayer has a Child-Resistant (CR) locking mechanism. Also, check the output per stroke (typically 0.8ml to 1.5ml) to ensure it meets the application requirements of your end-users.

A professional B2B buyer should demand a leakage test report (usually involving a vacuum test at -0.05Mpa). Durability is measured by the actuation life cycle; top-tier sprayers should withstand at least 3,000 to 5,000 pumps without failure. Request the supplier to provide SGS or TUV certification for raw material safety, especially if the product is used in food or cosmetic environments.

Leakage is the #1 risk in liquid packaging. Ensure the supplier uses automatic assembly machines rather than manual assembly to guarantee torque consistency. During negotiation, mandate that the shipping cartons are double-walled (5-layer corrugated) and that sprayers are packed in PE bags within the box to prevent dust contamination and friction damage during sea freight.

Focus on mold ownership and maintenance if you require a custom design. For standard models, leverage volume-based pricing: discounts of 10-15% are common when moving from 10,000 units to 50,000 units. Use Made-in-China.com's 'Selected Supplier' or 'Audited Supplier' reports to verify the factory's actual production capacity and export history before paying a deposit.

Trigger sprayers are lightweight but bulky, making Sea Freight (LCL or FCL) the most economical choice. Ensure the HS Code (typically 3926.90 or 8424.89) is correctly declared to avoid customs delays. If shipping to the US or EU, verify if there are any anti-dumping duties or specific plastic tax regulations currently in effect for imported polymer products.

Always use Secured Trading services provided by platforms like Made-in-China.com to protect your payment. Never transfer the full amount upfront; a standard 30% deposit and 70% balance against the Bill of Lading (B/L) is the industry norm. For first-time large orders, hiring a third-party inspection agency to perform a Pre-Shipment Inspection (PSI) is highly recommended to verify the spray pattern and trigger tension.