A total chlorine test kit (Model 16900; Hach Co., Loveland, CO, USA; Method 8209, which is based on the iodometric method) was used to measure total residual chlorine in the electrolyzed seawaters. The assay was verified periodically using a 100 ± 0.05-ppm chlorine standard solution (Orion Research Inc., Beverly, MA, USA). All measurements were carried out at 29 ± 1°C.
Model 16900
Manufactured by HACH
Sourced in United States
The Model 16900 is a portable laboratory instrument designed for measuring pH, conductivity, and temperature. It provides accurate and reliable measurements for a variety of applications in the laboratory setting.
Automatically generated - may contain errors
Lab products found in correlation
Sodium phosphate buffer, by Thermo Fisher Scientific (1 mentions)
Toc vcsh analyzer, by Shimadzu (1 mentions)
Nitrogen ammonia reagent set, by HACH (1 mentions)
Abi 7500, by Thermo Fisher Scientific (1 mentions)
Nanodrop nd 1000, by Thermo Fisher Scientific (1 mentions)
Model 5417r, by Eppendorf (1 mentions)
Hq30d, by HACH (1 mentions)
Model sension 5, by HACH (1 mentions)
7 protocols using model 16900
1
Measuring Total Residual Chlorine in Seawater
2
Alcohol-based Surface Sanitizer Efficacy
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PURELL® Surface Sanitizer and Disinfectant Spray (PSS), an alcohol‐based antimicrobial surface chemistry containing 29.4% ethanol as an active ingredient, and other inactive ingredients (i.e. water, isopropanol, lauric acid and potassium hydroxide) with a pH of 12.6–12.9, was provided by GOJO Industries, Inc. (Akron, OH) and was used as per manufacturer’s instructions. Sodium hypochlorite solutions (100, 500, 750, 1000, 2000, 3000, 4000 and 5000 ppm) were prepared by diluting commercial bleach in sodium phosphate buffer, pH 7.3 (Life Technologies). Total chlorine concentration was confirmed using a digital titrator (model 16,900, Hach Co.).
3
Determination of Total Chlorine in Seawater
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A total chlorine test kit (Model 16900; Hach Co., Loveland, CO, USA; Method 8209, which is based on iodometric method.) was used to measure total residual chlorine in the electrolyzed seawaters. The assay was verified periodically using a 100 ± 0.05 ppm chlorine standard solution (Orion Research Inc., Beverly, MA, USA). All measurements were conducted at 29 ± 1 °C.
4
Nutrient Release Analysis in Aquaponics
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Fish were removed from the 10-L nutrient release tank and returned to aquaponics systems. No fish died during the nutrient release procedure. The resultant nutrient solution was immediately processed. A 50-mL sample was filtered through a 0.45µm nylon syringe filter and the filtrate used for element composition analysis The total elemental concentration in the filtered sample was determined by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) analysis. Concentrations of the anions Br -, Cl -, NO2 -, NO3 -, PO4 3-and SO4 2-were determined using ion chromatography. Ammonia (NH3) was determined using the Hach Ammonia Low-Range Standard Method 10023 (Nitrogen-Ammonia Reagent Set, TNT, AmVer Salicilate Low Range). The alkalinity was determined using a digital titrator (Hach Model 16900). The pH was determined using a HACH Hq40d multi pH meter.
Dissolved organic carbon was determined using a using a Shimadzu TOC-VCSH analyzer (Columbia, MD) with a solid state module (SSM-5000A).
Dissolved organic carbon was determined using a using a Shimadzu TOC-VCSH analyzer (Columbia, MD) with a solid state module (SSM-5000A).
5
Comprehensive Analytical Instrumentation Setup
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Hardness tester (model 16900, Hach Company, Loveland, CO, USA), dissolved oxygen tester (HQ30d, Hach Company, Loveland, CO, USA), electronic analysis balance (ATY124, Shimazu Company of Japan), ultrasonic cleaning machine (UC-4600, Shenzhen Lanjie Ultrasonic Electric Co., Ltd., Shenzhen, China), ultra-pure water machine (UPR table type, Sichuan Youpu Ultra-pure Technology Co., Ltd., Chengdu, China), hand-held homogenizer (S10, Shanghai Jingxin Industrial Development Co., Ltd., Shanghai, China), UV spectrophotometer (UV-3000PC, Shanghai Meipuda Instrument Co., Ltd., Shanghai, China), six-link magnetic heating stirrer (HJ-6A, Jintan District Shuibei Science Experimental Instrument Factory, Changzhou, China), digital display constant temperature water bath (HH4, Shanghai Lichen Bangxi Instrument Technology Co., Ltd., Shanghai, China), low temperature centrifuge (model 5417R, Eppendorf, Hamburg, Germany), real-time PCR System (ABI 7500, Thermo Scientific, Waltham, MA, USA), thermal cycle (MODEL ETC-811, Beijing Dongsheng Innovation Co., Ltd., Beijing, China), gel electrophoresis and imaging system (Bio-Rad Laboratories, Inc., Hercules, CA, USA), and micro UV nucleic acid quantification system (NanoDrop ND-1000, Thermo Scientific, Waltham, MA, USA) were used.
6
Electrochemical Characterization of Seawater
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Oxidation–reduction potential (ORP) and pH value of the electrolyzing seawaters were measured with pH/mV/ISE meters (Model Sension 4, Hach Co., Loveland, CO, USA) equipped with an ORP and a pH electrode (part # 5779601-003B and 5773597-003B, respectively, Van London Co., Houston, TX, USA). Electrical conductivity was measured with a Conductivity Meter (Model Sension 5, Hach Co.). A total chlorine test kit (Model 16900; Hach Co.; Method 8209, which is based on Iodometric method.) was used to measure total residual chlorine in the electrolyzed seawaters. The assay was verified periodically using a 100 ± 0.05 ppm chlorine standard solution (Orion Research Inc., Beverly, MA, USA). All measurements were done at 29 ± 1°C.
7
Measuring Total Residual Chlorine in Seawater
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A total chlorine test kit (Model 16900; Hach Co., Loveland, CO, USA; Method 8209, which is based on the iodometric method) was used to measure total residual chlorine in the electrolyzed seawaters. The assay was verified periodically using a 100 ± 0.05 ppm chlorine standard solution (Orion Research Inc., Beverly, MA, USA). All measurements were conducted at 29 ± 1°C.
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