the samples were homogenized in a ball mill in ethiopia

We tested possible contamination of whole wood and cellulose samples during ball‐mill homogenization for carbon and oxygen isotope measurements We used a multi‐factorial design with twothree steel milling balls two sample amounts 10 mg 40 mg and two milling times 5 min 10 min...We are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill, flotation machine, concentrator and other beneficiation equipment; Powder Grinding Plant, rotary dryer, briquette machine, mining, metallurgy and other related equipment. which can crush all kinds of metal and non-metallic ore, also can be dry grinding and wet grinding.If you are interested in our products or want to visit the nearby production site, you can click the button below to consult us.Welcome to our factory to test machine for free!

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  • Contamination risk of stable isotope samples during

    Contamination risk of stable isotope samples during

    We tested possible contamination of whole wood and cellulose samples during ball‐mill homogenization for carbon and oxygen isotope measurements We used a multi‐factorial design with twothree steel milling balls two sample amounts 10 mg 40 mg and two milling times 5 min 10 min

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  • Metabolic prediction of important agronomic traits in

    Metabolic prediction of important agronomic traits in

    For each sample 04 ml of methanolchloroform V methanolV chloroform 31 and 20 μl of ribitol 02 mgml stock in dH 2 O SigmaAldrich Co LLC USA were added as internal standards After vortex mixing for 10 s steel balls were placed into EP tubes and the samples were homogenized with a ball mill JXFSTPRP24 Shanghai Jingxin Experimental Technology Shanghai China for 5 min at 55 Hz

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  • Effect of waterbinder ratio on properties of

    Effect of waterbinder ratio on properties of

    Nov 01 2019 · At the beginning PG was dried at 60°C and afterwards homogenized by milling it in ball mill or by collision milling in disintegrator Samples were made with plasticizers mineral additives and foam forming additive In this work 26 dense and 9 porous mixture compositions was summarized from which 18 compositions were made from commercial

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  • Search for Extraterrestrial Osmium at the Allerod

    Search for Extraterrestrial Osmium at the Allerod

    Dec 01 2008 · About 10 g samples were freezedried ground and homogenized in a zirconia ballmill The samples mixed with 190Os tracer solutions were dissolved in carius tubes and Os extracted in liquid bromine Os was further purified using microdistillation Os isotopes were measured using NTIMS on Dartmouth Triton

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  • Quantitative determination of anthocyanins in three sweet

    Quantitative determination of anthocyanins in three sweet

    Feb 01 2011 · Eight standards containing 0 5 10 13 15 20 25 and 30 mg of keracyanin in 100 mg KBr were prepared and then homogenized for 5 min in a ball mill Retstch MM 2000 242 Samples preparation Pericarp slices of the sweet cherry samples were freezedried overnight Then they were homogenized in the aforementioned ball mill for 5 min 243 FTIR measurements Infrared spectra of

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  • Synthesis and study of a new class of red pigments based

    Synthesis and study of a new class of red pigments based

    Dec 01 2007 · The dried mixtures were homogenized with selected mineralizers in a planetary ball mill and then heated in an electric furnace The maximum temperature was 1300–1500 °C reached with a heating rate of 10 °Cmin The maximum temperature was retained for 6 h and the samples were left to cool freely in furnace

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  • Retsch mills jaw crushers  shakers for environmental

    Retsch mills jaw crushers shakers for environmental

    The impressive speed of 2000 min1 so far unrivaled in a ball mill in combination with the special grinding jar design generates a vast amount of size reduction energy Thanks to the new liquid cooling system excess thermal energy is quickly discharged preventing both sample and mill from overheating even after long grinding times

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  • Formation and sintering of spinels MgAl2O4 in reducing

    Formation and sintering of spinels MgAl2O4 in reducing

    Feb 03 2003 · Spinels were prepared by weighing aluminum oxide and magnesium hydroxide in calculated quantities The mixtures were homogenized in a ball mill for 4 h Alumina balls and 01 deflocculant were used The suspension was vacuum filtered and dried at 60 °C The dried mixture was passed through a 60 ASTM sieve

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  • Determining the fatty acid composition in plasma and

    Determining the fatty acid composition in plasma and

    Dec 01 2014 · For the extraction according to Matyash plasma was mixed with 300 µL of MeOH and the liver tissue was homogenized with 300 µL of MeOH and 50 µL of water in a ball mill see above Thereafter 600 µL of MTBE was added the samples were vigorously shaken for 15 min and mixed with 300 µL of 015 mmolL ammonium acetate

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  • Mercury speciation and total trace element determination

    Mercury speciation and total trace element determination

    Samples were freezedried as whole organisms transferred to 25 mL Teflon screw top vials machined inhouse with a 15 mm Teflon grinding ball McMaster Carr Aurora OH USA added to each sample and homogenized using a Retsch MM301 ball mill Haan Germany Of the 285 samples included in this study 14 had dry weights of less than 10 mg and 45 weighed less than 20 mg Ground samples were

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