Delta ph meter

Manufactured by Mettler Toledo

Sourced in United States

The Delta pH-meter is a precision instrument designed to measure the pH of various liquid samples. It provides accurate and reliable pH measurements, enabling users to monitor and control the acidity or alkalinity of their samples.

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Lab products found in correlation

Toc 500a, by Shimadzu (1 mentions) Macro cn analyzer, by Leco (1 mentions) Toc 5000a analyzer, by Shimadzu (1 mentions) Kjeltec 2300 analyzer unit, by Foss (1 mentions)

Close spelling variants of this product

Delta 320 pH meter Delta 350 pH meter Toledo Delta 320 pH meter PH meter

3 protocols using delta ph meter

Soil Physicochemical Characterization

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Soil moisture content was determined by oven-drying the samples at 105 °C overnight.
Soil pH was assessed using a fresh soil to water ratio of 2.5 using a Delta pH-meter (Mettler-Toledo Instruments Co., Columbus, OH, USA). Total carbon and total nitrogen were measured on a LECO macro-CN analyzer (LECO, St. Joseph, MI, USA).
Dissolved organic carbon (DOC) was determined by an extraction method described by Jones and Willett (2006) and measured on a TOC analyzer (Shimadzu TOC-500A, Japan).

Trivedī P., Rochester I.J., Trivedi C., Van Nostrand J.D., Zhou J., Karunaratne S., Anderson I.C, & Singh B.K. (2015). Soil aggregate size mediates the impacts of cropping regimes on soil carbon and microbial communities. Soil biology & biochemistry, 91.

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Soil Physicochemical Property Analysis

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The soil samples were sieved through a 2-mm mesh to remove roots and then ground and homogenized with a mill (MM400, Retsch, Germany). 15 g of fresh soil was weighed before and after dried at 105 °C for 24 h to calculate the soil water content (SWC). The soils were subjected to Kjeldahl digestion, and the soil total nitrogen (TN) concentration was determined using a semi-autoanalyzer (Kjeltec 2300 Analyzer Unit, Foss Tecator, Sweden). Soil total phosphorus (TP) concentration was measured by persulfate oxidation followed by colorimetric analysis (Schade et al., 2003 (link)). Soil total organic carbon (TOC) was determined with a TOC-5000A analyzer (Shimadzu Corp., Kyoto, Japan). Soil pH was measured using a ratio of soil:water = 1g:2.5 ml with a Delta pH-meter (Mettler-Toledo Instruments, Columbus, OH, USA).

Chen L., Shi J., Bao Z, & Baoyin T. (2020). Soil fungal networks are more sensitive to grazing exclusion than bacterial networks. PeerJ, 8, e9986.

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Soil pH and Moisture Measurement

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Soil pH was measured using 2.5 ± 0.01 g of each fresh sample mixed with 12.5 ml of Mili‐Q water and kept on a shaker for 1 h at 180 r.p.m. and allowed to settle before reading with a Delta pH meter (Mettler‐Toledo Instruments, Columbus, OH, USA). Soil moisture content was calculated and expressed as the percentage of soil weight by measuring the difference in weight of soil samples before and after oven drying at 105°C for 24 h.

Jayaramaiah R.H., Egidi E., Macdonald C.A., Wang J., Jeffries T.C., Megharaj M, & Singh B.K. (2021). Soil initial bacterial diversity and nutrient availability determine the rate of xenobiotic biodegradation. Microbial Biotechnology, 15(1), 318-336.

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