등급 & 순도BioReagent?BioReagent grade — tested suitable for life-science and molecular-biology use. Use for cell culture, assays, and biochemical work needing biological compatibility.
BioReagent BioReagent 최소한의 기준선 간섭이 필요한 민감한 크로마토그래피 및 분석 워크플로우용.
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보관 및 배송
Store at 2-8°C Wet ice 출고. 정확한 사양은 로트별 COA를 확인하세요.
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품질 문서
SDS, COA, 데이터시트, 사양서를 다운로드할 수 있습니다. 로트별 COA는 로트 번호 조회를 통해 확인할 수 있습니다.
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문헌적 근거
크로마토그래피, 유기 합성 및 교차 커플링 반응 분야의 동료 심사 논문 0편에서 인용되었습니다.
개요
Soil available nitrogen includes inorganic mineral nitrogen and readily decomposable, relatively simple organic nitrogen from organic matter. It is the sum of NH₄⁺-N, NO₃⁻-N, amino acids, amides, and easily hydrolyzable protein nitrogen. The content of soil available nitrogen is related to the content and quality of organic matter. Soils with high organic matter content and a high degree of maturity have higher available nitrogen content; conversely, soils with low organic matter content have lower available nitrogen content. Soil available nitrogen can more accurately reflect the recent nitrogen supply status of the soil.
Determination principle: In a diffusion dish, the soil is hydrolyzed with an alkaline solution to convert easily hydrolyzable nitrogen (potentially available nitrogen) into NH₃, which is then absorbed by boric acid after diffusion. The NH₃ in the boric acid absorption solution is titrated with standard acid, and the content of available nitrogen in the soil is calculated.
Products are supplied to verified businesses, institutions, and qualified professionals for research and development use only. Not for use in humans, animals, diagnosis, or therapy.
