Artemia cysts

The most critical metric is the Hatching Percentage (HP), which should ideally be above 90% for premium grades. Additionally, evaluate the Hatching Efficiency (HE), measured by the number of nauplii produced per gram of cysts (e.g., >250,000 nauplii/g). Buyers should also verify the moisture content, which must be below 5-8% to ensure long-term storage stability and prevent premature metabolic activity.

Artemia Cysts from the Great Salt Lake (USA) are known for high nutritional value and consistent size, while Bohai Bay (China) cysts often offer excellent hatching rates and smaller nauplii sizes suitable for early-stage larvae. Russian and Central Asian (e.g., Lake Gorkoye) sources are valued for their high HUFA (Highly Unsaturated Fatty Acid) content. Choose the origin based on your specific aquaculture species' mouth size and nutritional requirements.

Ensure the supplier utilizes advanced cleaning and separation technologies (such as magnetic separation) to remove heavy metals, sand, and empty shells. The cysts should undergo low-temperature vacuum drying to preserve biological activity. For high-end applications, look for decapsulated cysts or those treated with UV sterilization to minimize the risk of pathogen introduction (like Vibrio) into the hatchery environment.

Artemia Cysts are highly sensitive to oxygen and humidity. Professional suppliers should provide vacuum-sealed tin cans (typically 425g or 500g) or oxygen-free nitrogen-flushed packaging. For bulk transport, ensure the product is kept in a cool, dry environment (below 4°C). Long-term storage requires sub-zero temperatures (-18°C to 0°C) to maintain the hatching rate over 12-24 months.

The primary risk is quality degradation during transit due to heat exposure, which can drastically drop hatching rates. Another risk is adulteration, where high-grade cysts are mixed with low-grade or 'dead' cysts. To mitigate this, always request a pre-shipment sample and use third-party inspection services to verify the Hatching Rate Certificate before final payment.

Artemia Cysts are often classified under HS Code 051191. You must check your country's biosecurity and veterinary import permits, as some regions require a Health Certificate issued by the exporting country's government. Ensure the supplier on Made-in-China.com can provide a Certificate of Origin and a Phytosanitary/Veterinary Certificate to avoid customs seizures.

Pricing is heavily influenced by the harvest season and annual yield from major salt lakes. Negotiate based on volume tiers (e.g., 10+ cartons vs. full container loads) and ask for seasonal contracts to lock in prices. If the hatching rate is the variable, propose a price-adjustment clause where the final price is indexed to the lab-verified hatching percentage upon arrival.

For large volumes, Reefer Containers (Refrigerated Shipping) are mandatory to maintain a stable temperature. For smaller trial orders, Air Freight is preferred to minimize time spent in hot transit hubs. Always specify 'Keep Cool' and 'Away from Heat' labels on all outer packaging and ensure the bill of lading reflects these handling instructions.