There is no shortage. For 100 μ g of labeled substance, 1.5 μ l of coupling catalyst is required. However, the minimum shipping specification of the coupling catalyst is 20 μ l. Therefore, from BF06196-100 μ g to BF06196-1000 μ g, the 20 μ l of coupling catalyst provided is both sufficient and in excess. The final BF06196-5000ug provides one 100ul coupling catalyst, which is both sufficient and excessive.