Dear researcher, The best standard for using in protein quantification is BSA. But what is important for you is preparation of dilution sires that are lower 0.5 mg/ml. Hope you can easily.

Best

use of BSA,Egg Albumin or trypsin /Chymotripsin (Sigma ) but haemolymph of the insect has more amount of small molecular wt proteins & polypetides in their haemolymph when I worked for my PhD thesis research at IARI New Delhi in 1974 on Desert locust haemolymph proteins.using Gel filtration and PAGE during that time .

thanks