The terms reactant and product can be used to describe constituents of individual enzymatic reactions or entire metabolic pathways. Reactants (or 'substrates') are the starting materials for a reaction, In the generic reaction shown below, A and B are the reactants. C and D are the products. CO2 and RUBP are the reactants in this reaction, Rubisco is the enzyme, and the product is two molecules of 3PGA. We can also refer to the reactants and products of entire metabolic pathways, such as of the light-independent reactions.
A. PLASTER IS A TIME TESTED PRODUCT: Plaster has been used as a swimming pool surface coating for the past 50 years. This experience has shown that plaster is a durable surface that can stand up to the environment of proper pool water chemistry.
1 Re-plastering the interior surface of an average residential in-ground pool (10,000-20,000 gallons or 14'x28' to 16'x32' and 3.5'-5' deep) with standard white plaster or marble-dust plaster (marcite) typically costs $2,500-$5,500, depending on the size, depth and shape of the pool, and local rates. Painting the pool surface with epoxy paint to restore its appearance can cost $1,200-$2,500 for do-it-yourself materials, or $3,000-$5,500 to have it professionally painted.