tender for purchase of chemicals , purchase of chemicals , petri dishes size 90mm petri dishes are shallow, circular laboratory containers made of glass or disposable plastic, used for culturing microorganisms and plant tissues on solid media such as agar. they provide a sterile surface for growth, observation, and isolation of colonies, and are widely used in microbiology and molecular biology experiments. , d-(+)-maltose quantity 5 size 1kg d-(+)-maltose is a disaccharide composed of two glucose units linked by an α-1,4 glycosidic bond. it is used in microbiology as a carbon and energy source in culture media to support the growth of microorganisms and in biochemical assays for studying carbohydrate metabolism. , ampicillin size 25g ampicillin is a β-lactam antibiotic used in molecular biology to select bacteria carrying plasmids with the ampicillin resistance (ampr) gene. it inhibits bacterial cell wall synthesis by targeting penicillin-binding proteins, leading to cell lysis. it is commonly added to culture media to maintain selective pressure during cloning and plasmid propagation. , sucrose size 500g sucrose is a disaccharide composed of glucose and fructose, widely used in molecular biology and plant tissue culture as a carbon and energy source. it also acts as an osmotic stabilizer, helping maintain cell integrity and proper osmotic balance in media and solutions. sucrose is commonly included in plant transformation and regeneration media to support cell division, growth, and differentiation, and in certain protocols it is used to protect cells during handling and processing. , l-proline size 25g l-proline is an amino acid commonly used in plant tissue culture and molecular biology as an osmoprotectant and stress-related metabolite. it helps stabilize proteins and cellular structures under stress conditions and can enhance cell growth, regeneration, and transformation efficiency. l-proline is often added to culture media to improve callus induction and support plant cell development. , triton x-100 size 100ml triton x-100 is a non-ionic detergent widely used in molecular biology for cell lysis and membrane permeabilization. it solubilizes lipids and membrane proteins without denaturing proteins, making it useful in dna and protein extraction protocols. it is also used in washing buffers to reduce non-specific interactions during experimental procedures.