A reagent management apparatus, characterized by : an insert , said insert including a pliable sheet composed of water resistant material comprising a first section and a second section connected to one another and being foldable relative to one another, a third section being connected to said first section and a fourth section being connected to said second section , said first section and said third section and said second section and said fourth section being foldable relative to one another, a fifth section and a sixth section each being foldable and connected to said first section and said second section , said first section and said second section being folded relative to one another, thereby creating a trough having a nadir and folded fifth section and folded sixth section are also folded upon themselves forming, together with the first section (34 and the second section , a reservoir for the reagent, said third section and said fourth section each having a longitudinal dimension less than said connected first , second , fifth , and sixth sections, said third section and said fourth section each including a free edge , being folded toward said nadir , and said at least fifth section extending outwardly from said reservoir and from said fourth section , forming a pouring spout ; and a base , said base comprising said trough accommodating said reservoir formed by said first section and said second section of said insert , said base further including at least a first slot and a second adjacent slot for encompassing said free edges of said third section and said fourth section , respectively. an insert , said insert including a pliable sheet composed of water resistant material comprising a first section and a second section connected to one another and being foldable relative to one another, a third section being connected to said first section and a fourth section being connected to said second section , said first section and said third section and said second section and said fourth section being foldable relative to one another, a fifth section and a sixth section each being foldable and connected to said first section and said second section , said first section and said second section being folded relative to one another, thereby creating a trough having a nadir and folded fifth section and folded sixth section are also folded upon themselves forming, together with the first section (34 and the second section , a reservoir for the reagent, said third section and said fourth section each having a longitudinal dimension less than said connected first , second , fifth , and sixth sections, said third section and said fourth section each including a free edge , being folded toward said nadir , and said at least fifth section extending outwardly from said reservoir and from said fourth section , forming a pouring spout ; and a base , said base comprising said trough accommodating said reservoir formed by said first section and said second section of said insert , said base further including at least a first slot and a second adjacent slot for encompassing said free edges of said third section and said fourth section , respectively. <EOS>