Study on determination of 13 anions in drinking water by ion chromatography_conductivity detection

Establish an ion chromatography-conductivity detection method for simultaneous determination of 13 anions in drinking water. Method: The Metrosep A Supp 5-250 anion analysis column was used in combination with the Metrosep A Supp 1 Guard guard column. The eluent was 3.2 mmol / L Na2CO3-1.0 mmol / L NaHCO3, the flow rate was 0.7 ml / min, and the injection volume was 100 μl. Results: Within a certain concentration range, each test object had a good linear relationship (r> 0.999), and the detection limit was low (0.0003 mg / L ~ 0.0134 mg / L). Standard recovery, the recovery rate is between 93% and 104%. Conclusion: This method is simple, sensitive and accurate. It can separate and measure 13 anions in drinking water at the same time with one sample injection, which can meet the requirements of water quality testing in China's "Sanitary Standards for Drinking Water".

Manual Open Straight Umbrella

Manual Open Straight Umbrella is also called a Manual Open Stick Umbrella or a Hand Open Straight Umbrella. They come in many sizes and weights and of course they all are of exceptional quality and appearance. If you are looking for a sturdy and classic umbrella for travel, business or outdoor, look no further than our manual open straight umbrella. Our reputation has been built on quality, design and service – all at a competitive price. It is also a great item for promotional purpose or advertising on important event.


Our Manual Open Straight Umbrella is known for fine detail and craftsmanship. Your design is carefully taking care by our skillful workers. They are capable of carrying out the complicated tasks, such as pico lace, ruffle, frilling, overlock and so on. The pattern or logo can be processed by printing or embroidery on an umbrella.

 

Material and Quality:

Our Manual Open Straight Umbrella uses specific waterproof and water-repelling coated fabric. There is also a super-fast drying water-repelling fabric for alternative. We have many styles, colors and a large fabric range from which to choose. Fabric types are included Cotton, Polyester, Nylon, Rip-stop, Yarn-dye, Satin, Twill, and etc. Some of them are made in Japan or in Taiwan.


We select the highest specification materials for the frame.  The frame is made using carbon fiber, fiberglass, aluminum, wood and steel.


The handle is always the first thing to be noticed with an umbrella. We have made a wide range of handle designs available, using wood, bamboo, genuine leather, PU leather, plastic, EVA foam and alloy. There are crook handle and straight umbrella in shape.  


OEM and Order Quantity:

We have been operating as one of the leading high end umbrella manufacturers in the world for over 30 years. We are well known for our OEM work, along with producing many designer brands.


We can provide customization for your designs and logo. What a great way to present your company to the world! A prestige product with your own company logo – give your company the class and style it deserves.


Flexible in order volume -  orders can be in LCL or full container -  MOQ can be discussed accordingly.


Whether you are a wholesaler, retailer or small business owner, our high quality Straight Umbrella is a great collection to enhance your product range and improve your business.


Packaging:

Each straight umbrella is packed in a clear poly bag.  Ten pieces per inner carton -  3 to 5 inner cartons per standard export carton.

Packaging

About us:

Hyades Umbrella Co., Ltd. is a Taiwanese company specializing in manufacturing various upmarket and designer brand umbrellas. Our company's mission is to achieve the highest standard of quality in the field and to go above and beyond our client's expectations.


Our product range from a straight umbrella, Folding Umbrella , Auto Open And Close Umbrella, through to Golf Umbrella ; from Kids Umbrella ; from Mens Umbrella to Women's Umbrella.


OEM Order Procedure:

Sales Procedure

Our Production Procedure:

Hyades Compact Umbrella Production

Manual Open Straight Umbrella

Manual Open Straight Umbrella,Manul Open Long Umbrella,Hand Open Stick Umbrella,Different Types Of Umbrellas

Hyades Umbrella Co., Ltd. , https://www.hyadesumbrella.com