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NS 4500:1969 PDF

Interchangeable conical ground glass joints

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NS 4500:1980 PDF

Laboratory glassware — Interchangeable conical ground joints

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NS 4501:1969 PDF

Principles of construction and adjustment of volumetric glassware

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NS 4501:1980 PDF

Laboratory glassware — Principles of design and construction of volumetric glassware

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NS 4502:1969 PDF

Burettes

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NS 4503:1969 PDF

Principles of construction and adjustment of liquid-in-glass laboratory thermometers

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NS 4503:1980 PDF

Liquid-in-glass laboratory thermometers — Principles of design, construction and use

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NS 4504:1969 PDF

Principles of construction and adjustment of hydrometers

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NS 4504:1980 PDF

Hydrometers — Principles of construction and adjustment

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NS 4505:1969 PDF

Interchangeable spherical ground glass joints

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