Answer Posted / amit agrawal (torrent res.)

in ultra violet detector, you cn only analyse the compound
at particular wavelength you selected but in photo diode-
array detector, you can select multiple of wavelength due
to presence of polychromator (wavelength between 190-380nm)
and hence peak purity identification is also carried out
due to this property.

in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

890

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Why a1% value is used for some product ? What is the criteria for selection a1% value ?

2395

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Why we use potassium dichromate in uv calibration Exact reason behind it??

1325

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how to get accurate result for Residue on evaporation in purified water

1697

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Tell me something about Vitamin A test method by HPLC

2725

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what is mean by nitrosamine impurities?

1118

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in sampling of raw material which side is pasted sampled labels

1888

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what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

946

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If vendor having more imp than monograph then how to proceed? and how to set spec?

1005

---

how require to select dissolution media? what is discrimination?

842

---

How can we calculate offset value pH measurment

1559

---

why salisylic acid not using now days for disdolution calibration?

842

---

How to know the estimated LOQ concentration in ppm

1279

---

Principle of single pan analytical balance

5196

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how decide the clining method and cleaning method validation require for this perticular products?

822

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