Abstract: A method for isolating nucleic acids is provided. The method includes providing a biological sample containing at least one nucleic acid, and mixing the biological sample with an isolating agent under a suitable condition to isolate the nucleic acids from the biological sample in single step, wherein the isolating agent contains 1-40 wt % of PEG and/or more than 30 wt % of low molecular weight alcohol, a salt, and a detergent. Isolated nucleic acids are bound to a solid support by changes in the solubility of nucleic acids. Additionally, the present invention further provides an isolating agent and kit for isolating nucleic acids.

Abstract: A method for isolating nucleic acids is provided. The method includes providing a biological sample containing at least one nucleic acid, and mixing the biological sample with an isolating agent under a suitable condition to isolate the nucleic acids from the biological sample in single step, wherein the isolating agent contains 1-40 wt % of PEG and/or more than 30 wt % of low molecular weight alcohol, a salt, and a detergent. Isolated nucleic acids are bound to a solid support by changes in the solubility of nucleic acids. Additionally, the present invention further provides an isolating agent and kit for isolating nucleic acids.

Abstract: A tool element has a body and an anti-skid collar. The body has an external surface, a connecting end, an operating end, a mounting recess and multiple notches. The mounting recess is annularly formed round the external surface of the body between the ends and has a bottom face. The notches are formed on the bottom face of the mounting recess at intervals. The anti-skid collar is an annular collar, is detachably mounted around the body and has an inner surface, an outer surface, a holding face and an anti-skid face. The holding face is formed on the inner surface and is rubbed against the notches of the body to hold the anti-skid collar securely on the body. The anti-skid face is formed on the outer surface of the anti-skid collar.

Abstract: A lamp has a housing and a connecting device. The housing has at least one LED, a connecting section and a through hole. The at least one LED is mounted on the housing. The connecting section protrudes from the housing beside the at least one LED. The through hole of the housing is defined through the connecting section. The connecting device is connected with the connecting section and has a rod section which is mounted through the through hole of the housing.

Abstract: The tool cabinet has a casing, multiple protecting bars and multiple elastic slices. The casing has multiple edges. The protecting bars are respectively mounted on the edges of the casing, and each has an inner surface and a mounting recess. The mounting recess is formed in the inner surface of the protecting bar and has two sides and two inserting grooves respectively defined in the sides of the mounting recess. The elastic slices are respectively arranged on the casing near the edges and each elastic slice has two outer ends respectively inserted in the inserting grooves of the mounting recess of the corresponding protecting bar to connect the protecting bars on the casing.

Abstract: A tool element has a body and an anti-skid collar. The body has an external surface, a connecting end, an operating end, a mounting recess and multiple notches. The mounting recess is annularly formed round the external surface of the body between the ends and has a bottom face. The notches are formed on the bottom face of the mounting recess at intervals. The anti-skid collar is an annular collar, is detachably mounted around the body and has an inner surface, an outer surface, a holding face and an anti-skid face. The holding face is formed on the inner surface and is rubbed against the notches of the body to hold the anti-skid collar securely on the body. The anti-skid face is formed on the outer surface of the anti-skid collar.

Abstract: A lamp has a housing and a connecting device. The housing has at least one LED, a connecting section and a through hole. The at least one LED is mounted on the housing. The connecting section protrudes from the housing beside the at least one LED. The through hole of the housing is defined through the connecting section. The connecting device is connected with the connecting section and has a rod section which is mounted through the through hole of the housing. The connecting device allows the lamp to clamp any hand tool or be worn. The light beam emitted from the lamp is kept from being blocked by hands or objects. Therefore, it is convenient to use the hand tool with enough illumination in an awkward or dark place.

Abstract: A grip for pliers has a body and a bow. The body has an inner side, an outer side, a handle hole, a curved cushioning hole and a curved cushioning arm. The handle hole is capable of being mounted around a handle of the pliers, is defined in the body and is adjacent to the inner side of the body. The cushioning hole is curved, is defined through the body, is adjacent to the outer side of the body and extends along the handle hole. The cushioning arm is curved and is formed on the outer side of the body. The flexible bow is securely mounted in the cushioning arm and extends along the cushioning arm.

Abstract: A striking tool has a shaft, two plugs, two springs and a grip. The shaft has an outer surface, a grip section and two spring sections. The grip section is formed on and protrudes from the outer surface of the shaft and has a diameter and two ends. The spring sections are respectively adjacent to the ends of the grip section and each spring section has a diameter smaller than the diameter of the grip section. The plugs are slidably and respectively mounted around the spring sections. The springs are compressibly and respectively mounted around the spring sections and each spring abuts a corresponding plug and the grip section. The grip is slidably mounted around the grip section and is securely connected with both of the plugs.

Abstract: A method for isolating nucleic acids is provided. The method includes providing a biological sample containing at least one nucleic acid, and mixing the biological sample with an isolating agent under a suitable condition to isolate the nucleic acids from the biological sample in single step, wherein the isolating agent contains 1-40 wt % of PEG and/or more than 30 wt % of low molecular weight alcohol, a salt, and a detergent. Isolated nucleic acids are bound to a solid support by changes in the solubility of nucleic acids. Additionally, the present invention further provides an isolating agent and kit for isolating nucleic acids.

Abstract: A grip for pliers has a body and a bow. The body has an inner side, an outer side, a handle hole, a curved cushioning hole and a curved cushioning arm. The handle hole is capable of being mounted around a handle of the pliers, is defined in the body and is adjacent to the inner side of the body. The cushioning hole is curved, is defined through the body, is adjacent to the outer side of the body and extends along the handle hole. The cushioning arm is curved and is formed on the outer side of the body. The flexible bow is securely mounted in the cushioning arm and extends along the cushioning arm.

Abstract: A wrench with a sheath has a wrench body and a sheath. The wrench body has a handle. The sheath is made of non-rubber material that includes any plastic material being able to be applied for an injection molding method except rubber inseparably formed around the handle by the injection molding method and has a surface.

Abstract: A ratchet screwdriver includes a handle, a ratchet, a shaft, a finger ring and a tool. The handle has a body having a receiving chamber and a front through hole. The receiving chamber is formed in the body and communicates with the front through hole. The ratchet is mounted securely in the receiving chamber and has a driving protrusion and a drive selector. The shaft is mounted rotatably in the body and has a proximal end mounted securely on the keyed driving protrusion. The finger ring is mounted securely around the shaft outside the body and is smaller than the handle to allow quick and easy rotation of the shaft. The tool is selectively mounted securely in the shaft.

Abstract: A ratchet screwdriver includes a handle, a ratchet, a shaft, a finger ring and a tool. The handle has a body having a receiving chamber and a front through hole. The receiving chamber is formed in the body and communicates with the front through hole. The ratchet is mounted securely in the receiving chamber and has a driving protrusion and a drive selector. The shaft is mounted rotatably in the body and has a proximal end mounted securely on the keyed driving protrusion. The finger ring is mounted securely around the shaft outside the body and is smaller than the handle to allow quick and easy rotation of the shaft. The tool is selectively mounted securely in the shaft.

Abstract: A ratchet screwdriver includes a handle, a ratchet, a shaft and a finger ring. The handle has a body having a receiving chamber and a front through hole. The receiving chamber is formed in the body and communicates with the front through hole. The ratchet is mounted in the receiving chamber and has a keyed driving protrusion and a drive selector. The shaft is mounted rotatably in the body and has a proximal end being mounted securely on the keyed driving protrusion. The finger ring is mounted securely around the shaft outside the body and is smaller than the handle to allow quick and easy rotation of the shaft.

Abstract: A ratchet screwdriver includes a handle, a ratchet, a shaft and a finger ring. The handle has a body having a receiving chamber and a front through hole. The receiving chamber is formed in the body and communicates with the front through hole. The ratchet is mounted in the receiving chamber and has a keyed driving protrusion and a drive selector. The shaft is mounted rotatably in the body and has a proximal end being mounted securely on the keyed driving protrusion. The finger ring is mounted securely around the shaft outside the body and is smaller than the handle to allow quick and easy rotation of the shaft.