Rx 5000α

Manufactured by Atago

Sourced in Japan

The RX-5000α is a high-performance lab equipment designed for precise analysis and measurement. It features advanced sensor technology and a user-friendly interface. The core function of the RX-5000α is to provide accurate and reliable data for scientific research and industrial applications.

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Lab products found in correlation

Lovis 2000 m me, by Anton Paar (1 mentions) Dma 5000 m, by Anton Paar (1 mentions) Dosino model 800, by Metrohm (1 mentions) Haake mars rheometer, by Thermo Fisher Scientific (1 mentions) 2 2 diphenyl 1 picrylhydrazyl (dpph), by Merck Group (1 mentions) Seven compact, by Mettler Toledo (1 mentions) Dma 38, by Anton Paar (1 mentions)

9 protocols using rx 5000α

Viscosity, Density, and Refractive Index Characterization of Polymer Solutions

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The viscosity of the dope solution was determined using a rolling-ball viscometer (Model: Lovis 2000 M/ME, Anton Paar, Ashland, AL, USA). An amount of 100 μL sample solution was taken and put in a capillary tube with a metal ball and the sample viscosity was determined by considering the time taken for the ball to travel through the sample solution in the capillary tube.
The density of the dope solution was determined using a digital density meter (Model: DMA 5000 M, Anton Paar) with an oscillating capillary U-tube. The measurement of density is based on the frequency of oscillation. An amount of 1 mL sample solution is filled into a U-shaped oscillating capillary tube. The density meter is set in connection with the rolling ball viscometer. For the determination of viscosity and density, PC/DCM dope solutions with 3, 6, 9, 12, 15, 17, 19 and 21 wt % polymer concentrations and PC/NMP solutions with 3, 6, 9, 12, 15, 18 wt % polymer concentrations were used. The same sample solutions were also analyzed for the refractive index using a refractometer (RX5000α, Atago, Washington, DC, USA). The refractometer was first calibrated with distilled water of known refractive index. About 2–3 mL of the sample solution was drawn and put in the sample cone of the refractometer.

Idris A., Man Z., Maulud A.S, & Khan M.S. (2017). Effects of Phase Separation Behavior on Morphology and Performance of Polycarbonate Membranes. Membranes, 7(2), 21.

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Coriander Seed Oil Characterization

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For both methods, specific gravity, color and refractive index (ATAGO, Rx-5000α, Japan) of the essential oils extracted from the coriander seeds were measured according to the method by Karakaya et al. (2012) (link). Refractive index was measured at 20 °C and specific gravity was measured at 25 °C.

Ghazanfari N., Mortazavi S.A., Yazdi F.T, & Mohammadi M. (2020). Microwave-assisted hydrodistillation extraction of essential oil from coriander seeds and evaluation of their composition, antioxidant and antimicrobial activity. Heliyon, 6(9), e04893.

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Quantitative Analysis of Naphthenic Acids

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The quantification
of NA in dodecane and IL layers was performed using an ATAGO programmable
digital refractometer (RX-5000α) according to an already reported
procedure^{8 (link)} because the quantification of
NA via gas chromatography (GC) and high-pressure liquid chromatography
(HPLC) is quite a cumbersome process because of its complex structure.^{10 (link),28 (link)−30 (link)} The respective concentrations of NA in hydrocarbon
and IL layers were estimated from the graphs of the refractive index
against the mole fraction, as shown in Figure 1.
The possible cross-contamination between both immiscible
solvents
has been verified with the help of ¹H nuclear magnetic
resonance (NMR). ¹H NMR measurements were done using a
Bruker Avance 500 MHz NMR spectrometer. The NMR spectra of dodecane
and IL layers without the presence of NA but after typical shaking
and decantation procedures are recorded and shown in Figures S1 and S2. In dodecane, no trace of the IL has been
found and vice-versa in the IL phase (no trace of dodecane was recorded)
indicating that cross contamination does not occur.

Nasir Shah S., Shah M.U., Mutalib M.I., Lethesh K.C., Leveque J.M., Ullah N, & Suleman H. (2022). Ultrasonic-Assisted Extraction of Toxic Acidic Components from Acidic Oil Using 1,8-Diazobicyclo[5.4.0]undec-7-ene-Based Ionic Liquids. ACS Omega, 7(31), 27479-27489.

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Citrus Juice Quality Analysis

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Juice SSC was measured from the supernatant with a refractometer (RX5000α, Atago, Tokyo, Japan). TA and pH were measured by using a titrator equipped with a robotic autosampler (model 855, Metrohm, Herisau, Switzerland), a dosing interface (Dosino model 800, Metrohm, Herisau, Switzerland) and controlling software (Tiamo v. 2.5, Metrohm, Herisau, Switzerland). The principle procedure for TA determination was to titrate 10 mL of juice sample with 0.1 N NaOH to pH 8.1, the TA value was expressed as [H⁺] concentration, mmol L⁻¹ [34 (link)].

Bai J., Rosskopf E.N., Jeffries K.A., Zhao W, & Plotto A. (2023). Soil Amendment and Storage Effect the Quality of Winter Melons (Benincasa hispida (Thunb) Cogn.) and Their Juice. Foods, 12(1), 209.

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Rheological and Physicochemical Properties of Deep Eutectic Solvents

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The viscosity properties of the formed
DESs were investigated by
rheological measurements; the experiments were conducted using a HAAKE
MARS rheometer (Thermo Fisher Scientific, Germany) set with a plate-plate
geometry (20 mm and 0.2 mm gap). A water recirculatory bath (HAAKE
Phoenix II, Germany) was used for temperature control, set to 20.0
± 0.1 °C. The water content of the DES was assessed by Karl
Fischer volumetric titration using a Metrohm 890 Karl Fischer Titrando
apparatus equipped with an 803 Ti Stand to 0.4% accuracy in water
mass content. The refractive indices were measured at the sodium D
line (589.3 nm) using an ATAGO RX-5000α refractometer at 25
°C. Table 3 summarizes
the most relevant properties obtained for the different DESs prepared.
Note that the DESs were also evaluated 30 days after preparation to
infer on the aging effect.

Magalhães S., Moreira A., Almeida R., Cruz P.F., Alves L., Costa C., Mendes C., Medronho B., Romano A., Carvalho M.D., Gamelas J.A, & Rasteiro M.D. (2022). Acacia Wood Fractionation Using Deep Eutectic Solvents: Extraction, Recovery, and Characterization of the Different Fractions. ACS Omega, 7(30), 26005-26014.

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Determining Soluble Solids Concentration

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The soluble solids concentration (SSC) was determined by using a digital refractometer (RX-5000α, ATAGO Co. LTD., Tokyo, Japan) at 20 °C and expressed as a percentage. For each treatment, 12 fruits comprising 6 replications were squeezed to obtain juice.

Fang Y., Kang F., Zhan G., Ma C., Li Y., Wang L., Wei Y., Gao X., Li Z, & Wang Y. (2019). The Effects of a Cold Disinfestation on Bactrocera dorsalis Survival and Navel Orange Quality. Insects, 10(12), 452.

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Nitrogen Release from PU-SFe-CRUs

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A nitrogen
release experiment was conducted to investigate the effects of the
coating ratio, SFeSt₃ proportion, and PAPI proportion on
nitrogen release characteristics of the PU-SFe-CRUs. For the effect
of the coating ratio, PU-SFe-CRUs with coating ratios of 1.32, 3.00,
and 4.68%, PAPI proportion of 50.00%, and SFeSt₃ proportion
of 0.70% were used. For the effect of SFeSt₃ proportion,
PU-SFe-CRUs with a coating ratio of 3.00%, PAPI proportion of 50.00%,
and SFeSt₃ proportions of 0.20, 0.70, and 1.20% were used.
For the effect of PAPI proportion, PU-SFe-CRUs with a coating ratio
of 3.00%, SFeSt₃ proportion of 0.70%, and PAPI proportions
of 33.18, 50.00, and 66.82% were used. The nitrogen release rates
of the above mentioned PU-SFe-CRUs and PU-CRU (CK) were measured according
to the standard method HG/T 4216-2011.⁵⁰ Briefly, 10 g CRU were put into a bottle containing 200 mL deionized
water and placed in a biochemical incubator at 25 ± 0.5 °C.
The solution was sampled after 1, 3, 5, 7, 14, 28, 56, and 84 days
of incubation for the determination of the refractive index using
a refractometer (RX-5000α, ATAGO Co., Ltd., Tokyo, Japan) until
the cumulative nitrogen release rate was larger than 80%.

Zhang L., Tian H., Zhang M., Wu L., Guo W., Fang F., Sun X., Zhong Z., Du L, & Liu Z. (2022). Preparation and Properties of Bio-Based Polyurethane Controlled Release Urea Coating with Photosensitivity. ACS Omega, 7(10), 8558-8569.

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Stability Assessment of CRPP Formulation

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Physical stability test of the CRPP was carried out for six months at various conditions at room temperature (RT), 6 °C and 38 °C. The parameters that were determined were pH (Seven Compact, Mettler Toledo, OH, USA), refractive index (% Brix) (RX-5000α, ATAGO CO., LTD., Tokyo, Japan), density (DMA 38, Anton Paar GmbH, Graz, Austria) and organoleptic characteristics like aspect, color and odor. Physical parameters were examined by visual examination comparing with the initial sample.
The parameters that were determined in order to investigate the chemical stability was antioxidant activity by DPPH (Sigma-Aldrich, MI, USA) scavenging assay [46 (link)], and total phenolic compounds by the Folin–Ciocalteu method (Merck KGaA, Darmstadt, Germany) [47 (link)] at appropriate time intervals (4, 8 and 24 weeks).

Spanidi E., Karapetsas A., Voulgaridou G.P., Letsiou S., Aligiannis N., Tsochantaridis I., Kynigopoulos S., Lambropoulou M., Mourtzinos I., Pappa A, & Gardikis K. (2021). A New Controlled Release System for Propolis Polyphenols and Its Biochemical Activity for Skin Applications. Plants, 10(2), 420.

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Measuring Total Soluble Solids in Sugarcane

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Total soluble solids (TSSs) that include sucrose were observed in 8-month-old sugarcane plants. The sugarcane juice extracted from the bottom, the middle, and the top of the stem was mixed together. The Brix value were measured by a refractometer probe (RX-5000α; ATAGO Co. Ltd., Tokyo, Japan).

Laksana C., Sophiphun O, & Chanprame S. (2023). In vitro and in vivo screening for the identification of salt-tolerant sugarcane (Saccharum officinarum L.) clones: molecular, biochemical, and physiological responses to salt stress. Saudi Journal of Biological Sciences, 30(6), 103655.

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