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Materials Heade for.la oon water nitro en quick test (3 101) <br /> '420 nm hand-held generic pocket colorimeter (Hach 46777-42) $34a0.00 <br /> note: The DR890 model colorimeter reads to three decimal places (generic reads to two), is <br /> somewhat more accurate in estimating organic-N, is less affected by hot temperatures, has a <br /> built in timer and can be useful for many different testing procedures. It costs about$899 <br /> 50 cc syringe, 300 gram analytical balance (to 1/10 gram), or really good eyesight for filling <br /> dilution bottles (below) with exactly 200 ml deicnized or distilled water <br /> t 250 mi (8 oz) cylindrical plastic bottle with dispensing flip-top dropper lid <br /> {Fisher Scientific phone 800-766-7000 part num. 02-926-1 $61.67 case of 24 or <br /> Consolidated Plastics phone 800-362-1000 order bottles & dropper lids separately: bottles <br /> 41688LL $8.40 per dozen, 24 ml flip top cap 41241 LL $2.64 per dozen <br /> Distilled or deionized water. If dilution bottles are filled ahead of time, additional water will be <br /> needed for the test that was drawn at the same time, from the same source, and has been <br /> stored and handled the same as the water in the dilution bottle. This is because even <br /> dlstilledldelonized water can contain ammonium, which dissipates during storage. The reagent. <br /> blank will account for this only if the reagent blank and sample water are identical. <br /> `1000 mi wash botVe (Hach 620-16) $6.25 <br /> j <br /> `2 clean and dry 10mL size sample cells, 1 inch pathlength. (Hach 24276-06) $15.50 set of 6 <br /> 1 ml plastic syringe (without a needle) Long's pharmacy in Ceres, $0.50 or ask your vet <br /> -Mineral stabilizing agent (Hach 23766-26) $7.05 <br /> 'Dispersing agent (Hach 23765-26) $6,10 <br /> 'Nessler reagent (Hach 21194-32) $12.75/bottle <br /> lagoon water in a capped container <br /> (optional) rack for sample cells, holds 24 25mm vials (Hach 24979-03) $14.00 each <br /> T (optional) calculator <br /> timer (2 minutes) <br /> (optional) hand held portable scale <br /> Ohaus 5C-4010 400g capacity, 0.1 gm readability, 50-104°F operating temp <br /> $139.95 or Ohaus HP-320 320 g capacity, 0.2 gm accuracy, 64-77°F operating temp <br /> $124.95 www.itinscaies,corn phone (718) 336-5900 <br /> order from HACH 1-800-227-4224 <br /> UCCE Stanislaus County 3/22/01 <br />