The analysis of BPF resin characteristics consisted of solid content, pH, and curing kinetics. The resin’s solid content was determined according to Chinese standard GB/T 14074 [21 ]. Five replicates were performed of each measurement and the average obtained. The determination of resin pH was conducted using a pH meter (PHS-3E, Shanghai INESA Scientific Instrument Co., Ltd., Shanghai, China) at room temperature. The curing characteristics of the resin were analyzed using a combined method of differential scanning calorimetric (DSC) measurement and kinetics. The resin was dried in a vacuum at 20 °C, ground to a powder, and assessed using DSC (200F3, Netzsch-Gerätebau GmbH, Selb, Germany). Dynamic scans were performed at heating rates of 10, 15, and 20 K·min−1 under nitrogen at 30.0 mL·min−1 and the scanning temperature was between 20 and 250 °C. The activation energy at the peak point of the DSC curves was obtained according to ASTM E689-18 [22 ], and calculated using the differential Kissinger method [23 ].
Phs 3e
Manufactured by INESA
Sourced in China
The PHS-3E is a pH meter designed for laboratory use. It measures the pH of liquid samples. The device features a digital display and can be powered by either batteries or an external power source.
Automatically generated - may contain errors
Lab products found in correlation
Delsa nano c, by Beckman Coulter (1 mentions)
0.22 μm filter, by Merck Group (1 mentions)
San system, by Skalar (1 mentions)
Dds 11a, by INESA (1 mentions)
Hlc 8320gpc, by Tosoh (1 mentions)
Ta q500, by TA Instruments (1 mentions)
S 4800, by Hitachi (1 mentions)
Uv 3600 spectrophotometer, by Shimadzu (1 mentions)
Jpbj 609l, by INESA (1 mentions)
Chi660d electrochemical workstation, by Chenhua (1 mentions)
Quanta430, by Thermo Fisher Scientific (1 mentions)
Chi660d, by Chenhua (1 mentions)
A220 fiber analyzer, by ANKOM Technology (1 mentions)
23 protocols using phs 3e
1
Characterization of BPF Resin Properties
2
Microbial Growth and pH Dynamics
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Isolates were cultivated in mix-amino acid decarboxylase media as described in “Detection of Amine-Forming Ability” section. The isolates were grown at 37°C for 0, 4, 8, 12, 24, 36, and 48 h. Then, the 600-nm absorbance and pH of the solution were determined with a spectrophotometer (721G, INESA) and a pH meter (PHS-3E, INESA), respectively.
3
pH Measurement of Microemulsion
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The electrode of the pH meter (PHS-3E, Shanghai INESA Scientific Instrument Co., Ltd., Shanghai, China) was dipped into the microemulsion sample, and the pH value was recorded after reaching equilibrium.
4
Measuring pH and Particle Size
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The pH value of the impregnated sol/solution was detected by a pH meter (PHS-3E, INESA Scientific Instrument Co., Ltd., Shanghai, China). The average size of PA/silica particles in the sol was measured using a laser particle size analyzer (Delsa Nano C, Beckman Coulter, San Diego, CA, USA).
5
Characterization of Cu NM pH Values
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The pH values were measured in the ultrapure aqueous solution of Cu NMs and WP at concentrations of 50, 100, 150 and 200 mg L−1 using a potentiometer (PHS-3E; INESA instrument, Chongqing, China). Each measurement was repeated in triplicate.
6
Measuring Total Titratable Acidity
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Ten grams of dough were homogenized with 90 mL of distilled water for 3 min; then, the total titratable acidity (TTA) was measured and expressed as the amount (mL) of 0.1 N NaOH to achieve a pH of 8.5. The pH values were determined by a pH-meter (PHS-3E) (INESA Scientific Instrument Co., Ltd., Shanghai, China) [18 (link)].
7
Preparation of pH Buffer Solutions
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The ROIOT electrodes were from the Zhongrui Electrode Industrial Technology Company, Dongguan, China. Sodium phosphate tribasic, sodium tetraborate and sodium acetate anhydrous were purchased from the Damao Chemical Reagent Factory, Tianjin, China. Sodium hydroxide (NaOH) was obtained from the Fuchen Chemical Reagents Co. Ltd., Tianjin, China. Hydrochloric acid (HCl) was obtained from Donghong Chemical Factory, Guangzhou, China.
A series of standard pH buffer solutions (pH = 2, 4, 6, 8, 10 or 12) were prepared by adjusting the pH value of 0.04 M H3PO4–HAc–H3BO3 with NaOH or HCl solution. A glass electrode-based pH meter (PHS-3E, INESA Scientific Instrument Co. Ltd., China) was used to measure the pH values of buffer solutions.
A series of standard pH buffer solutions (pH = 2, 4, 6, 8, 10 or 12) were prepared by adjusting the pH value of 0.04 M H3PO4–HAc–H3BO3 with NaOH or HCl solution. A glass electrode-based pH meter (PHS-3E, INESA Scientific Instrument Co. Ltd., China) was used to measure the pH values of buffer solutions.
8
Anaerobic Lactobacilli Cultivation and CFS Preparation
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Lactobacilli were grown in MRS broth (pH 6.5) for 48 h at 37°C in anaerobic condition. CFS was prepared by centrifuging the culture at 8000 rpm for 15 min at 4°C and then filtered through 0.22 μm filters (Millipore, Bedford, MA, USA). The pH value of CFS was measured by using a pH meter (PHS-3E, INESA Scientific Instrument, Shanghai, China). CFS was stored as single-use aliquots at -20°C until needed.
9
Measuring Fish Dorsal pH
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The pH values of the fish samples were identified following the method reported by Wen et al. [26 (link)] with modification. A 5 g sample excised from the middle of the dorsal of the fish was thoroughly homogenized with 45 mL of distilled water. The pH of the solution was then analyzed using a pH meter (PHS-3E; INESA Scientific Instrument, Shanghai, China).
10
Comprehensive Soil Nutrient Analysis
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Determination of soil organic carbon (SOC) by external heating of potassium dichromate [19 ]. Determination of total nitrogen (TN) by Kjeldahl digestion, the molybdate blue colorimetric method for determination of available phosphorus (AP), and atomic absorption spectrometry for determination of available potassium (AK) [19 ]. NO3−-N and NH4+-N were extracted at a ratio of 10 g fresh soil to 100 mL 2 M KCl. After shaking for 1 h, the extracts were filtered and analyzed by continuous flow analytical system (San++ System, Skalar, Holland) for NO3−-N and NH4+-N [20 (link)]. pH was measured using a pH meter (PHS-3E, INESA, China), and the soil-to-water ratio was 1:5 [21 (link)].
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