If the stock solutions are refrigerated or frozen for the relevant period, the stability should be documented.

如果储备液是在相关时期冷藏或冷冻的，稳定性应记录。

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Stock solutions of the analyte for stability evaluation should be prepared in an appropriate solvent at known concentrations.

用于稳定性评估的分析物储备液应使用适当的已知浓度的溶剂制备。

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The stability of stock solutions of drug and the internal standard should be evaluated at room temperature for at least 6 hours.

药物和内标的储备液稳定性应在室温下至少6小时评估。

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Here are five everyday investor dilemmas and my easy stock solutions.

FORBES: Debunking 5 Common Investor Dilemmas

"Bringing 32 million Americans into the system is a positive, but it's going to be disruptive in the next few years because of the changes it will bring, and the taxes to fund the bill start over the next few years, before you start getting the benefits from volume, " Jonas says, whose stock picks include Medco Health Solutions, Genoptix and St.

FORBES

Rarely when questioned would a business person describe Africa as the continent that yields a minimum of 8% Returns on Investment, has 85% cell phone penetration in some countries, develops innovative banking solutions such as MPESA in Kenya, boasts robust stock exchanges in Johannesburg, Lagos and Nairobi or that the origins of PayPal are in South Africa.

WHITEHOUSE: Champions of Change Blog