Naturally split, artificially opened, non-split and shelled pistachios are separate products
In-shell grades distinguish naturally split nuts from artificially opened and non-split forms. Shelled grades cover whole kernels and separately specified sizes, while pieces, roasted kernels, paste and oil add different composition, treatment, usable-yield and end-use requirements. Atlas keeps product form, opening method, variety or type, grade, size and intended use explicit before comparing lots or evidence.