Solubility studies of the SD formulations were carried out in triplicate via the method reported by Higuchi and Connors in pH buffer 1.2 [17 ]. pH buffer 1.2 was prepared. A specific amount of SD formulation was added to 10 ml volumetric flasks. The suspensions were maintained at 37 °C for 24 h. This timeframe was reported in the literature to be an appropriate timeframe to achieve equilibrium [5 (link)]. Two millilitres were filtered and withdrawn through 25 mm Millex—Polytetrafluoroethylene [PTFE] syringe filters (Merck Millipore LTD, Ireland) LCR code. The syringe filters were 0.45 µm in size and hydrophilic in nature. Once diluted, the filtrates were examined for dissolved INM spectrophotometrically at 320 nm [5 (link)].
Millex polytetrafluoroethylene ptfe syringe filters
Manufactured by Merck Group
Sourced in Ireland
Millex—Polytetrafluoroethylene [PTFE] syringe filters are versatile laboratory equipment used for the filtration of various liquids. They are designed to remove particulate matter and clarify samples prior to analysis or further processing. The filters are made of PTFE, a durable and chemically resistant material, ensuring reliable performance across a wide range of applications.
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Lab products found in correlation
2 protocols using millex polytetrafluoroethylene ptfe syringe filters
1
Solubility Studies of SD Formulations
2
Carbamate Pesticides Quantification Protocol
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Chemical standards of all carbamate pesticides were purchased from Dr. Ehrenstorfer GmbH (Augsburg, Germany). Primicarb d6 internal standard (IS), ammonium formate, and acetic acid were purchased from Sigma-Aldrich (St. Louis, MO). Solvents used in preparation of the standards and extraction, such as acetone, cyclohexane, dichloromethane, and ethyl acetate, were supplied by Sigma-Aldrich (St. Louis, MO). Acetonitrile and methanol used in UHPLC-MS/MS were purchased from Honeywell (Seelze, Germany). Millex polytetrafluoroethylene (PTFE) syringe filters were procured from Merck Millipore (Carrigtwohill, Ireland).
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