Brine Shrimp Egg, Technical Grade. Specifications: Hatch Rate (Ave.): 82.0% Cysts per Gram: 196.9K Nauplii per Gram (NPG): 161.4K Guaranteed Minimum Hatch Rate (at 99% Confidence Level) : 79.9%. Moisture: 9.0%. Some of our customers ask for smaller-than-average newly hatched brine shrimp (nauplii) for early feedings. This product is for those who want larger-than-average nauplii for later feedings.