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Healthy eating, lifestyle, veganism, alkaline diet, vegetarian concept. Green smoothies from nettle and yogurt, with honey, bran, seed mix and honeysuckle. Garnished with a mint leaf.
White chlorine tablets for swimming pool disinfection, pool water maintenance.
Illustration of universal pH paper indicators. Acidic, neutral, basic solution. Changes of color to red for acidic solution, blue for basic solution and green for neutral solution. Determination of pH
Set of battery charge level indicators on white
Battery electricity charge technology and accumulator alkaline battery-powered energy elements. Different toy and human tools power supply elements

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