Sample preparation devices that separate compounds in a liquid mixture based on their properties. Solid phase extraction can be used to isolate analytes from matrices such as urine, blood, water, beverages, soil, and animal tissue..
SPE stationary phase using silica as the adsorbent.
SELECT `e`.*, `price_index`.`price`, `price_index`.`tax_class_id`, `price_index`.`final_price`, IF(price_index.tier_price IS NOT NULL, LEAST(price_index.min_price, price_index.tier_price), price_index.min_price) AS `minimal_price`, `price_index`.`min_price`, `price_index`.`max_price`, `price_index`.`tier_price`, IFNULL(review_summary.reviews_count, 0) AS `reviews_count`, IFNULL(review_summary.rating_summary, 0) AS `rating_summary`, `stock_status_index`.`stock_status` AS `is_salable`, `shared_product`.`customer_group_id` FROM `catalog_product_entity` AS `e`
INNER JOIN `catalog_product_index_price` AS `price_index` ON price_index.entity_id = e.entity_id AND price_index.customer_group_id = 33 AND price_index.website_id = '1'
LEFT JOIN `review_entity_summary` AS `review_summary` ON e.entity_id = review_summary.entity_pk_value AND review_summary.store_id = 1 AND review_summary.entity_type = (SELECT `review_entity`.`entity_id` FROM `review_entity` WHERE (entity_code = 'product'))
INNER JOIN `cataloginventory_stock_status` AS `stock_status_index` ON e.entity_id = stock_status_index.product_id
INNER JOIN `shared_catalog_product_item` AS `shared_product` ON (shared_product.sku =e.sku) AND (shared_product.customer_group_id = '33') WHERE ((NULL)) AND (e.created_in <= 1) AND (e.updated_in > 1)